Science
Periodic Table - Elements - Calcium

Symbol Ca
Atomic Number 20
Relative Atomic Mass
12C = 12.0000
40.078
Atomic Radius
pm
197 (α-form)
First Ionisation Energy
kJ mol-1
589.7
Electronegativity 1.00
Density
kg m-3
1550 [293 K]
1365 [m.p.]
Molar Volume
cm3
25.86
Thermal Conductivity
W m-1 K-1
200 [300 K]
Melting Point
K
1112
Boiling Point
K
1757
Number of Isotopes 16
Ground State Electron
Configuration
[Ar]4s2
Term Symbol 1S0
Discovery Discovered by Sir H. Davey (London, England) in 1808
Name Derived From Latin calx meaning 'lime'
Name in Other
Languages
 Croatian Kalcij
 Danish calcium
 Dutch calcium
 Finnish kalsium
 French calcium
 German Kalzium
 Italian calcio
 Norwegian kalsium
 Portuguesecálcio
 Spanish calcio
 Swedish kalcium
Peter van der Krogt's Element Multidict - element name translations in over 48 langauges


Page compiled: Wed Sep 05 18:37:53 GMT+01:00 2001