Lunarpedia:Autostub2 test 3c

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Atomic number: 34
Atomic mass: 78.96
group: 16
period: 4
normal phase: Solid
series: Non-metals
density: (gray) 4.81 g/cm3(alpha) 4.39 g/cm3(vitreous) 4.28 g/cm3
melting point: 494K, 221°C, 430°F
boiling point: 958K, 685°C, 1265°F
useful isotopes: {{{isotopes}}}
As ← Se → Br
Atomic radius (pm): 115
Bohr radius (pm): 103
Covalent radius (pm): 116
Van der Waals radius (pm): 190
ionic radius (pm): (-2) 198
1st ion potential (eV): 9.75
Electron Configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4
Electrons Per Shell
2, 8, 18, 6
Electronegativity: 2.55
Electron Affinity: 2.02
Oxidation states: +/-2, 4, 6
Magnetism: ?
Crystal structure: Hexagonal
This article is a script test and is not appropriate for editing. Please discuss what should be different in the talk page.

Selenium is a Non-metals in group 16. It has a Hexagonal crystalline structure.

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