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Compare Calcium vs Titanium

Comparing Calcium (Ca) and Titanium (Ti). Atomic numbers 20 and 22 with atomic masses 40.078 u and 47.867 u, classified as alkaline earth 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
Ca
Calcium
#20
Ti
Titanium
#22

Periodic properties of the elements

CalciumTitanium
SymbolCaTi
Atomic number2022
Group24
Period44
Blockdd
Element categoryAlkaline Earth MetalTransition Metal

Physical properties

CalciumTitanium
Phase at STPSolidSolid
Density1.55 g/cm34.506 g/cm3
Atomic weight40.0784 u47.8671 u
Melting point1115 K
841.85 °C
1547.33 °F		1941 K
1667.85 °C
3034.13 °F
Boiling point1757 K
1483.85 °C
2702.93 °F		3560 K
3286.85 °C
5948.33 °F

Atomic properties

CalciumTitanium
Electronegativity (Pauling Scale)11.54
Electron affinity2.37 kJ/mol7.289 kJ/mol
Oxidation states+1, +2
(a strongly basic oxide)		−2, −1, 0, +1, +2, +3, +4
(an amphoteric oxide)
Ionization energies
  1. 589.8 kJ/mol
  2. 1145.4 kJ/mol
  3. 4912.4 kJ/mol
  4. 6491 kJ/mol
  5. 8153 kJ/mol
  6. 10496 kJ/mol
  7. 12270 kJ/mol
  8. 14206 kJ/mol
  9. 18191 kJ/mol
  10. 20385 kJ/mol
  11. 57110 kJ/mol
  12. 63410 kJ/mol
  13. 70110 kJ/mol
  14. 78890 kJ/mol
  15. 86310 kJ/mol
  16. 94000 kJ/mol
  17. 104900 kJ/mol
  18. 111711 kJ/mol
  19. 494850 kJ/mol
  20. 527762 kJ/mol
  1. 658.8 kJ/mol
  2. 1309.8 kJ/mol
  3. 2652.5 kJ/mol
  4. 4174.6 kJ/mol
  5. 9581 kJ/mol
  6. 11533 kJ/mol
  7. 13590 kJ/mol
  8. 16440 kJ/mol
  9. 18530 kJ/mol
  10. 20833 kJ/mol
  11. 25575 kJ/mol
  12. 28125 kJ/mol
  13. 76015 kJ/mol
  14. 83280 kJ/mol
  15. 90880 kJ/mol
  16. 100700 kJ/mol
  17. 109100 kJ/mol
  18. 117800 kJ/mol
  19. 129900 kJ/mol
  20. 137530 kJ/mol
  21. 602930 kJ/mol
  22. 639294 kJ/mol

Electron configuration

CalciumTitanium
Shorthand configuration[Ar] 4s2 [Ar] 3d2 4s2
Full configuration1s2 2s2 2p6 3s2 3p6 4s2 1s2 2s2 2p6 3s2 3p6 3d2 4s2
Electrons per shell2, 8, 8, 22, 8, 10, 2

History

CalciumTitanium
DiscoveryHumphry Davy (1808)William Gregor (1791)
First isolationHumphry Davy (1808)Jöns Jakob Berzelius (1825)
Named byMartin Heinrich Klaproth (1795)
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