Periodic Table Of The Elements

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Atomic Number: 19
Symbol: K
Name: Potassium
Group: 1
Period: 4
Weight: 39.0983(1)
Density: 0.862
Melting Point: 336.5
Boiling Point: 1032
Specific Heat Capacity: 0.757
Electronegativity: 0.82
Abundance: 20900