Magnesium
Latin name | Magnesium |
English name | Magnesium |
chemical symbol | Mg |
atomic number | 12 |
relative atomic mass | 24,305 |
period | 3 |
group | II.A |
classification | metals |
discovery year | 1808 |
discoverer | H. Davy |
melting point [°C] | 648,8 |
boiling point [°C] | 1090 |
density [g cm-3] | 1,738 |
density at melting point [g cm-3] | 1,584 |
electronegativity [Pauling] | 1,31 |
stand. el. potential [V] | −2,372 |
oxidation states | II |
electron configuration | [Ne]3s2 |
atomic radius [pm] | 145 |
covalent radius [pm] | 130 |
specific heat [J g-1K-1] | 1,02 |
heat of fusion [kJ mol-1] | 8,954 |
thermal conductivity [W m-1 K-1] | 156 |
el. conductivity [S m-1] | 2,24.107 |
1. ionizing potential [eV] | 7,6462 |
2. ionizing potential [eV] | 15,035 |
3. ionizing potential [eV] | 80,143 |
Mohs hardness | 2,5 |
Brinell hardness [MPa] | 260 |
shear modulus [GPa] | 17 |
Young's modulus [GPa] | 45 |
state at normal conditions | solid |
Resources
- BARTHELMY, David. Mineral Species containing Magnesium. In: Mineralogy database [online]. 2010 [cit. 2012-06-20]. Available from: http://webmineral.com/chem/Chem-Mg.shtml
- JURSÍK, František. Anorganická chemie kovů. 1. vyd. Praha: Vysoká škola chemicko-technologická, 2002. ISBN 80-7080-504-8.
- MICHNA, Štefan. Hořčík a jeho slitiny. In: Štefan Michna - studijní materiály - Katedra technologií a materiálového inženýrství Univerzity J.E.Purkyně v Ústí nad Labem [online]. 2007 [cit. 2012-04-11]. Available from: http://www.stefanmichna.com/.../vyroba_horciku.pdf
- VOJTĚCH, Dalibor, et al. Hořčík - kov pro medicínu i pro skladování vodíku. Chemické Listy 105, s. 678-638, 2011.
sodium ← magnesium → aluminium