Calcium
Latin name | Calcium |
English name | Calcium |
chemica symbol | Ca |
atomic number | 20 |
relative atomic mass | 40,078 |
period | 4 |
group | II.A |
classification | alkaline earth metals |
discovery year | 1808 |
discoverer | H. Davy |
melting point [°C] | 839 |
boiling point [°C] | 1484 |
density [g cm-3] | 1,55 |
density at melting point [g cm-3] | 1,378 |
electronegativity [Pauling] | 1,0 |
oxidation states | II |
electron configuration | [Ar]4s2 |
specific heat [J g-1K-1] | 0,63 |
heat of fusion [kJ mol-1] | 8,54 |
thermal conductivity [W m-1 K-1] | 201 |
el. conductivity [S m-1] | 3,13.107 |
1. ionizing potential [eV] | 6,1132 |
2. ionizing potential [eV] | 11,871 |
3. ionizing potential [eV] | 50,908 |
Mohs hardness | 1,75 |
Brinell hardness [MPa] | 167 |
shear modulus [GPa] | 7,4 |
Young's modulus [GPa] | 20 |
state at normal conditions | solid |
Resources
- BARTHELMY, David. Mineral Species containing Calcium. In: Mineralogy database [online]. 2010 [cit. 2012-09-02]. Available from: http://webmineral.com/
- JURSÍK, František. Anorganická chemie kovů. 1. vyd. Praha: Vysoká škola chemicko-technologická, 2002. ISBN 80-7080-504-8.
- MELLOR, Joseph. Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 3. Londýn: Longmans, Green & Co., 1923.
- PŘIBIL, Rudolf. Komplexometrie. Praha: SNTL, 1977.
- SÝKORA, Václav. Chemickoanalytické tabulky. Praha: SNTL, 1976.
potassium ← calcium → scandium