Calsium

20.Calcium Ca~(40.078 g/mol)

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Calsium

Calcium

Calcium carbonate

Wikipedia calcium

Details of calsium

Latin name:

Сalcium

English name:

Calcium

Year discovered:

1808

CAS Number:

CAS7440-70-2

Discovered by:

Humphry Davy

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Atomic number:

20

Atomic weight (Relative atomic mass):

40.078(g/mol)

Density:

1.55 (g/cm³) (g/cm³)

Melting point:

842.0°C   =   1547.6°F   =   1115.15K

Boiling point:

1484.0°C   =   2703.2°F   =   1757.15K

Phase:

Solid

Valence:

II

Period:

4

Group:

IIA

Block:

s - block

Electron configuration:

[Ar]4s2

1s2 2s2 2p6 3s2 3p6 4s2

Oxidation states:

+2

Ion charge:

Ca2+

Atomic radius:

197 (pm)

Atomic radius:

197 (pm)

Covalent radius:

174 (pm)

Van der Waals radius:

231 (pm)

Electronegativity:

1

Valence:

II

Electron affinity:

2.37 (kJ/mole)

Electrical conductivity:

2.9 ⋅ 107 (S/m)

Electrical type:

Conductor

Magnetic type:

Paramagnetism

Volume magnetic susceptibility:

0.00002139

Mass magnetic susceptibility:

0.0000000138

Molar magnetic susceptibility:

5.531 ⋅ 10-10 (m³/mol)

Resistivity:

3.4 ⋅ 10-8 (mΩ)

Superconducting point:

----

Crystal structure:

Face-centered cubic

Grid parameters:

5.580 Å

Attitude c/a :

----

Debye temperature:

-43.15°C   =   -45.67°F   =   230.0K