Element Name: Calcium
Atomic No.: 20
State (298 K): solid
Uses: alloys and dietary supplement
Atomic Mass: 40.078 g/mol
Density: 1.55 g/
3
B.P.: 1757 K
F.P.: 1112 K
Electronic Configuration: 1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
Isotopes:
40
Ca 39.963 amu (96.941%)
42
Ca 41.959 amu (0.647%)
43
Ca 42.959 amu (0.135%)
44
Ca 43.955 amu (2.086%)
46
Ca 45.954 amu (0.0004%)
48
Ca 47.9524 amu (0.187%)
Electronegativity: 1.00
Radius: 174 pm (covalent)
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