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Classifications |
Alternate Names | None |
Names of Allotropes | AmorphousRedSelenium, AmorphousBlackSelenium, MonoclinicSelenium, HexagonalSelenium |
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Block | p |
Group | 16 |
Period | 4 |
Series | Chalcogen |
Electron Configuration | [Ar]4s23d104p4 |
Color | Gray |
Discovery | |
Gas phase | N/A |
CAS Number | CAS7782-49-2 |
CID Number | |
RTECS Number | |
Electrical properties |
Electrical Type | N/A |
Electrical Conductivity | N/A |
Resistivity | N/A |
Superconducting Point | N/A |
Magnetic properties |
Magnetic Type | Diamagnetic |
Curie Point | N/A |
Mass Magnetic Susceptibility | -4×10-9 m3/Kg |
Molar Magnetic Susceptibility | -3.16×10-10 m3/mol |
Volume Magnetic Susceptibility | -0.0000193 |
Abundances |
% in Universe | 3×10-6% |
% in Sun | N/A |
% in Meteorites | 0.0013% |
% in Earth's Crust | 5×10-6% |
% in Oceans | 4.5×10-8% |
% in Humans | 5×10-6% |
Atomic dimensions and structure |
Atomic Radius | 103 pm |
Covalent Radius | 120 pm |
Van der Waals Radius | 190 pm |
Crystal Structure | Simple Monoclinic |
Lattice Angles | |
Lattice Constants | |
Space Group Name | P121/c1 |
Space Group Number | 14 |
Nuclear Properties |
Half-Life | Stable |
Lifetime | Stable |
Decay Mode | N/A |
Quantum Numbers | 3P2 |
Neutron Cross Section | 11.7 |
Neutron Mass Absorption | 0.0056 |
Known Isotopes | 65Se, 66Se, 67Se, 68Se, 69Se, 70Se, 71Se, 72Se, 73Se, 74Se, 75Se, 76Se, 77Se, 78Se, 79Se, 80Se, 81Se, 82Se, 83Se, 84Se, 85Se, 86Se, 87Se, 88Se, 89Se, 90Se, 91Se, 92Se, 93Se, 94Se |
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Stable Isotopes | |
Isotopic Abundances | |
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