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Compare Zinc vs Cobalt

Comparing Zinc (Zn) and Cobalt (Co). Atomic numbers 30 and 27 with atomic masses 65.382 u and 58.933 u, classified as transition metal and transition metal. Below: a side-by-side comparison of their physical, atomic, electron-configuration and historical properties, including density, melting and boiling points, ionization energies, oxidation states and discovery history.

vs
Zn
Zinc
#30
Co
Cobalt
#27

Periodic properties of the elements

ZincCobalt
SymbolZnCo
Atomic number3027
Group129
Period44
Blockdd
Element categoryTransition MetalTransition Metal

Physical properties

ZincCobalt
Phase at STPSolidSolid
Density7.14 g/cm38.9 g/cm3
Atomic weight65.382 u58.9332 u
Melting point692.68 K
419.53 °C
787.154 °F		1768 K
1494.85 °C
2722.73 °F
Boiling point1180 K
906.85 °C
1664.33 °F		3200 K
2926.85 °C
5300.33 °F

Atomic properties

ZincCobalt
Electronegativity (Pauling Scale)1.651.88
Electron affinity-58 kJ/mol63.898 kJ/mol
Oxidation states−2, 0, +1, +2
(an amphoteric oxide)		−3, −1, 0, +1, +2, +3, +4, +5
(an amphoteric oxide)
Ionization energies
  1. 906.4 kJ/mol
  2. 1733.3 kJ/mol
  3. 3833 kJ/mol
  4. 5731 kJ/mol
  5. 7970 kJ/mol
  6. 10400 kJ/mol
  7. 12900 kJ/mol
  8. 16800 kJ/mol
  9. 19600 kJ/mol
  10. 23000 kJ/mol
  11. 26400 kJ/mol
  12. 29990 kJ/mol
  13. 40490 kJ/mol
  14. 43800 kJ/mol
  15. 47300 kJ/mol
  16. 52300 kJ/mol
  17. 55900 kJ/mol
  18. 59700 kJ/mol
  19. 67300 kJ/mol
  20. 71200 kJ/mol
  21. 179100 kJ/mol
  1. 760.4 kJ/mol
  2. 1648 kJ/mol
  3. 3232 kJ/mol
  4. 4950 kJ/mol
  5. 7670 kJ/mol
  6. 9840 kJ/mol
  7. 12440 kJ/mol
  8. 15230 kJ/mol
  9. 17959 kJ/mol
  10. 26570 kJ/mol
  11. 29400 kJ/mol
  12. 32400 kJ/mol
  13. 36600 kJ/mol
  14. 39700 kJ/mol
  15. 42800 kJ/mol
  16. 49396 kJ/mol
  17. 52737 kJ/mol
  18. 134810 kJ/mol
  19. 145170 kJ/mol
  20. 154700 kJ/mol
  21. 167400 kJ/mol
  22. 178100 kJ/mol
  23. 189300 kJ/mol
  24. 204500 kJ/mol
  25. 214100 kJ/mol
  26. 920870 kJ/mol
  27. 966023 kJ/mol

Electron configuration

ZincCobalt
Shorthand configuration[Ar] 3d10 4s2 [Ar] 3d7 4s2
Full configuration1s2 2s2 2p6 3s2 3p6 3d10 4s2 1s2 2s2 2p6 3s2 3p6 3d7 4s2
Electrons per shell2, 8, 18, 22, 8, 15, 2

History

ZincCobalt
DiscoveryIndian metallurgists (1000 BC)Georg Brandt (1735)
First isolationAndreas Sigismund Marggraf (1746)Georg Brandt (1735)
Named byParacelsus
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