 | Calcium | Atomic Number: 20 |
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- Overview
Property Value Units 40.078
1.55
- Thermal Properties
Thermal Properties
Property Value Units 839°C
1484°C
The critical pressure has not been determined for Calcium
The critical temperature has not been determined for Calcium
8.54 kJ/mol
155 kJ/mol
631 J/kg·K
200 W/m·K
- Electon Configuration
[Ar] 4s2
K L M N O P Q 2 8 8 2 0 0 0 Level S Orbital P Orbital D Orbital F Orbital Level 1 Level 2 - History
Year Discovered
1808
- Isotopes
Isotope Common Name Symbol Mass Status Abundance Half-life Decay mode Decay Energy Nuclear Spin Magnetic Moment 20
Ca
40
Calcium Ca 40 Stable 96.941 - - - - - 20
Ca
42
Calcium Ca 42 Stable 0.647 - - - - - 20
Ca
43
Calcium Ca 43 Stable 0.135 - - - - - 20
Ca
44
Calcium Ca 44 Stable 2.086 - - - - - 20
Ca
46
Calcium Ca 46 Stable 0.004 - - - - - 20
Ca
48
Calcium Ca 48 Stable 0.187 - - - - - Isotopic mass data for stable isotopes is from:
G. Audi, A.H. Wapstra in Nuclear Physics A, 1993, 565, 1-65
and
G. Audi, A.H.Wapstra in Nuclear Physics A, 1995, 595 409-480.Natural abundance data is from:
K.J.R. Rosman, P.D.P. Taylor in Pure Appplied Chemistry, 1999, 71, 1593-1607.- Occurance
In the Universe 0.007% In the Sun 0.007% In Meteorites 1.1% In the Earth's Crust 5% In Seawater 0.00042% In the Human Body 1.4% - Models
Pictures, videos and 3D models of the element
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