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Selenium
(Se)
0
2
0
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2
8
18
6
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Se
Category
Nonmetal
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Relative atomic mass
78.96
Density
4.8
Melting point (°C)
221
Boiling point (°C)
685
Electronegativity (Pauling)
2.4
Discovery year
1817
Discovered by
Jöns Jakob Berzelius
Electrons: 34
Protons: 34
Neutrons: 46
Wikipedia
created by @lukaswyss
Selenium (Se) – Element 34
