Periodic Table Of The Elements

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Atomic Number: 34
Symbol: Se
Name: Selenium
Group: 16
Period: 4
Weight: 78.96(3)
Density: 4.809
Melting Point: 494.15
Boiling Point: 958
Specific Heat Capacity: 0.321
Electronegativity: 2.55
Abundance: 0.05