Periodic Table Of The Elements

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Atomic Number: 17
Symbol: Cl
Name: Chlorine
Group: 17
Period: 3
Weight: 35.453(2)
Density: 0.003214
Melting Point: 172.31
Boiling Point: 239.11
Specific Heat Capacity: 0.479
Electronegativity: 3.16
Abundance: 145