AFO Chemical Element Domain Ontology (WD/2026/06)
type: Ontology
imports: afo
issued: 2026-07-08T12:00:00Z
license: Creative Commons Attribution 4.0 International Public License
modified: 2026-03-30T12:00:00Z
rights: Derivative works attribution
rights: (c) 2019 Allotrope Foundation
prior version: chemical-element
version info: WD/2026/06

chemical element
type: Class
subclass of: AFM_0001028
alternative label: element
definition: A chemical element is an atom with a fixed number of protons in the atomic nucleus. [Allotrope]

isotope
type: Class
subclass of: chemical element
subclass of: AFM_0000275
definition: Isotopes are variants of a particular chemical element which differ in neutron number, although all isotopes of a given element have the same number of protons in each atom. [Wikipedia]

neptunium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 93
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 93. [Allotrope]

sulfur atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 16
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 16. [Allotrope]

polonium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 84
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 84. [Allotrope]

silicon atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 14
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 14. [Allotrope]

xenon atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 54
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 54. [Allotrope]

phosphorus atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 15
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 15. [Allotrope]

hafnium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 72
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 72. [Allotrope]

lead atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 82
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 82. [Allotrope]

iodine atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 53
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 53. [Allotrope]

bismuth atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 83
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 83. [Allotrope]

beryllium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 4
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 4. [Allotrope]

oxygen atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 8
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 8. [Allotrope]

radium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 88
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 88. [Allotrope]

zinc atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 30
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 30. [Allotrope]

lutetium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 71
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 71. [Allotrope]

samarium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 62
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 62. [Allotrope]

molybdenum atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 42
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 42. [Allotrope]

carbon atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 6
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 6. [Allotrope]

tantalum atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 73
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 73. [Allotrope]

osmium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 76
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 76. [Allotrope]

scandium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 21
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 21. [Allotrope]

cobalt atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 27
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 27. [Allotrope]

rubidium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 37
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 37. [Allotrope]

krypton atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 36
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 36. [Allotrope]

neodymium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 60
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 60. [Allotrope]

indium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 49
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 49. [Allotrope]

cesium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 55
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 55. [Allotrope]

chromium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 24
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 24. [Allotrope]

protactinium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 91
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 91. [Allotrope]

potassium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 19
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 19. [Allotrope]

manganese atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 25
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 25. [Allotrope]

cerium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 58
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 58. [Allotrope]

nickel atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 28
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 28. [Allotrope]

plutonium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 94
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 94. [Allotrope]

erbium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 68
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 68. [Allotrope]

radon atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 86
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 86. [Allotrope]

zirconium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 40
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 40. [Allotrope]

rhodium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 45
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 45. [Allotrope]

bromine atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 35
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 35. [Allotrope]

selenium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 34
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 34. [Allotrope]

helium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 2
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 2. [Allotrope]

gallium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 31
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 31. [Allotrope]

calcium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 20
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 20. [Allotrope]

europium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 63
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 63. [Allotrope]

terbium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 65
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 65. [Allotrope]

thulium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 69
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 69. [Allotrope]

niobium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 41
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 41. [Allotrope]

gold atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 79
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 79. [Allotrope]

barium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 56
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 56. [Allotrope]

holmium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 67
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 67. [Allotrope]

iridium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 77
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 77. [Allotrope]

vanadium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 23
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 23. [Allotrope]

tin atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 50
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 50. [Allotrope]

hydrogen atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 1
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 1. [Allotrope]

palladium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 46
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 46. [Allotrope]

technetium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 43
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 43. [Allotrope]

nitrogen atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 7
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 7. [Allotrope]

magnesium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 12
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 12. [Allotrope]

thallium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 81
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 81. [Allotrope]

ytterbium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 70
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 70. [Allotrope]

strontium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 38
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 38. [Allotrope]

chlorine atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 17
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 17. [Allotrope]

dysprosium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 66
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 66. [Allotrope]

tungsten atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 74
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 74. [Allotrope]

gadolinium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 64
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 64. [Allotrope]

neon atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 10
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 10. [Allotrope]

aluminum atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 13
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 13. [Allotrope]

actinium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 89
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 89. [Allotrope]

iron atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 26
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 26. [Allotrope]

astatine atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 85
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 85. [Allotrope]

ruthenium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 44
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 44. [Allotrope]

arsenic atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 33
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 33. [Allotrope]

francium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 87
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 87. [Allotrope]

lanthanum atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 57
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 57. [Allotrope]

germanium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 32
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 32. [Allotrope]

yttrium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 39
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 39. [Allotrope]

titanium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 22
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 22. [Allotrope]

uranium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 92
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 92. [Allotrope]

antimony atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 51
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 51. [Allotrope]

boron atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 5
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 5. [Allotrope]

argon atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 18
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 18. [Allotrope]

silver atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 47
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 47. [Allotrope]

sodium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 11
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 11. [Allotrope]

lithium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 3
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 3. [Allotrope]

mercury atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 80
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 80. [Allotrope]

tellurium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 52
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 52. [Allotrope]

thorium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 90
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 90. [Allotrope]

promethium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 61
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 61. [Allotrope]

cadmium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 48
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 48. [Allotrope]

rhenium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 75
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 75. [Allotrope]

platinum atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 78
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 78. [Allotrope]

copper atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 29
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 29. [Allotrope]

praseodymium atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 59
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 59. [Allotrope]

fluorine atom
type: Class
equivalent class: Class
  intersection of: chemical element
  intersection of: Restriction
    on property: AFX_0002832
    qualified cardinality: 9
    on class: AFM_0001023
AFX_0002798: true
definition: The chemical element with atomic number 9. [Allotrope]

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