Strontium
Latin name | Strontium |
English name | Strontium |
chemical symbol | Sr |
atomic number | 38 |
relative atomic mass | 87,62 |
period | 5 |
group | II.A |
classification | alkaline earth metals |
discovery year | 1793 |
discoverer | M. H. Klaproth |
melting point [°C] | 769 |
boiling point [°C] | 1384 |
density [g cm-3] | 2,6 |
density at melting point [g cm-3] | 6,98 |
electronegativity [Pauling] | 0,95 |
stand. el. potential [V] | −2,899 |
oxidation states | -II, +II |
electron configuration | [Kr]5s2 |
atomoic radius [pm] | 219 |
covalent radius [pm] | 182 |
specific heat [J g-1K-1] | 0,3 |
heat of fusion [kJ mol-1] | 8,3 |
thermal conductivity [W m-1 K-1] | 35,4 |
el. conductivity [S m-1] | 2.106 |
1. ionizing potential [eV] | 5,6948 |
2. ionizing potential [eV] | 11,03 |
3. ionizing potential [eV] | 43,6 |
Mohs hardness | 1,5 |
Young's modulus [GPa] | 6,1 |
state at normal conditions | solid |
Resources
- ANGULO, Marc. Strontium. In: U.S. GEOLOGICAL SURVEY. Mineral Commodity Summaries [online]. 2013 [cit. 2013-03-29]. Available from: http://minerals.usgs.gov/.../mcs-2013-stron.pdf
- BARTHELMY, David. Mineral Species containing Strontium. In: Mineralogy database [online]. 2010 [cit. 2012-06-20]. Available from: http://webmineral.com/.../Chem-Sr.shtml
- 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.
rubidium ← strontium → yttrium