Calcium

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Calcium
Ca
In situ availability:
Necessity: essential
Atomic number: 20
Atomic mass: 40.078
group: 2
period: 4
normal phase: Solid
series: Alkaline earth metals
density: 1.55 g/cm3
melting point: 1115K,
842°C,
1548°F
boiling point: 1757K,
1484°C,
2703°F
NaMgN/A
K ← Ca → Sc
RbSrY
Atomic radius (pm): 180
Bohr radius (pm): 194
Covalent radius (pm): 174
Van der Waals radius (pm):
ionic radius (pm): (+2) 100
1st ion potential (eV): 6.11
Electron Configuration
1s2
2s2 2p6
3s2 3p6
4s2
Electrons Per Shell
2, 8, 8, 2
Electronegativity: 1
Electron Affinity: 0.04
Oxidation states: 2
Magnetism: Paramagnetic
Crystal structure: Face centered cubic

Calcium is a Alkaline earth metal in group 2. It has a Face centered cubic crystalline structure. This element has 7 stable isotopes: 40, , 42, 43, 44, 46, and 48. Its resistivity is 3.91 E-6 ohm cm [1]




Reference




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