Selenium
| Latin name | Selenium |
| English name | Selenium |
| chemical symbol | Se |
| atomic number | 34 |
| relative atomic mass | 78,96 |
| period | 4 |
| group | VI.A |
| classification | nonmetals |
| discovery year | 1817 |
| discoverer | J. J. Berzelius |
| melting point [°C] | 217 |
| boiling point [°C] | 684,9 |
| critical temperature [°C] | 1493 |
| critical pressure [MPa] | 27,2 |
| density [g cm-3] | 4,8 |
| density at melting point [g cm-3] | 3,12 |
| electronegativity [Pauling] | 2,55 |
| electronegativity [Mulliken] | 2,60 |
| oxidation states | -II, II, IV, VI |
| electron configuration | [Ar]3d10 4s2 4p4 |
| specific heat [J g-1K-1] | 0,32 |
| heat of fusion [kJ mol-1] | 6,694 |
| thermal conductivity [W m-1 K-1] | 0,52 |
| el. conductivity [S m-1] | 8.106 |
| 1. ionizing potential [eV] | 9,7524 |
| 2. ionizing potential [eV] | 21,19 |
| 3. ionizing potential [eV] | 30,82 |
| Mohs hardness | 2 |
| Brinell hardness [MPa] | 736 |
| shear modulus [GPa] | 3,7 |
| Young's modulus [GPa] | 10 |
| state at normal conditions | solid |
Resources
- BAGNALL, Kenneth. Chimija selena, tellura i polonija. Moskva: Atomizdat, 1971.
- BARTHELMY, David. Mineral Species containing Selenium. In: Mineralogy database [online]. 2010 [cit. 2012-06-20]. Available from: http://webmineral.com/.../Chem-Se.shtml
- BERZELIUS, J, J. Lehrbuch der Chemie. Fünfte umgearbeiteite Original-Auflage, Zweiter Band. Dresden und Leipzig: Arnoldischen Buchhandlung 1844. p. 195-228.
- BUTTERMAN, W; BROWN, R. Mineral Commodity Profiles - Selenium. In: U.S. DEPARTMENT OF THE INTERIOR, U.S. GEOLOGICAL SURVEY. Minerals informations [online]. 2004 [cit. 2012-09-04]. Available from: http://pubs.usgs.gov/.../of03-018/
- EMSLEY, John. The Elements. Oxford: Clarendon Press, 1998. ISBN 9780198558187.
- GEORGE, M. Selenium. In: U.S. GEOLOGICAL SURVEY. Mineral Commodity Summaries [online]. 2013 [cit. 2013-02-07]. Available from: http://minerals.usgs.gov/.../mcs-2013-selen.pdf
- HUSTED, Robert; et al. Selenium. In: LANS Los Alamos National Lab [online]. 2011 [cit. 2012-08-19]. Available from: http://periodic.lanl.gov/34.shtml
- JURSÍK, František. Anorganická chemie nekovů. Praha: Vysoká škola chemicko-technologická, 2001. ISBN 80-7080-417-3.
- KAMENÍČEK, Jiří; et al. Anorganická chemie. 4. vydání. Olomouc: Univerzita Palackého, 2009. ISBN 978-80-244-2387-6.
- KLIKORKA, Jiří; et al. Obecná a anorganická chemie. 2. nezměněné vydání. Praha: SNTL, 1989.
- KUDRJAVCEV, Aleksandr. Chimija i technologija selena i tellura. 2-oe pererab. i dopoln. izd. Moskva: Metallurgija, 1968.
- NAZARENKO, Ivan; JERMAKOV, Anatoli. Analitičeskaja chimija selena i tellura. Moskva: Nauka, 1971.
- REMY, Heinrich. Anorganická chemie - I. díl. 2. české vydání, dotisk. Praha: SNTL 1971.
- SINDEEVA, N.D. Mineralogy and types of deposits of selenium and tellurium. New York: Wiley and Sons, 1964.
- STARÝ, Jaromír; SITENSKÝ, Ivo; HODKOVÁ, Tereza. Surovinové zdroje České republiky - Nerostné suroviny 2011. In: Česká geologická služba. Surovinové zdroje v ČR [online]. 2011 [cit. 2012-08-01]. Available from: http://www.geology.cz/.../rocenka2011sur.pdf
- STWERTKA, Albert. A Guide to the Elements. Oxford: University Press, 2002. ISBN 0-19-515027-9.
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