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Potassium

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name Potassium
latin Kalium
french Potassium
german Kalium
symbol K
proton number 19
atomic weight 39.0983
Pauling electronegativity 0.82
electronic configuration [Ar] 4s1
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melting point 336.53 K, 63.38°C, 146.08°F
boiling point 1032 K, 759°C, 1398°F
group 1
period 4
state (by 20°C) solid
oxidation states +1
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Discoverer

Year of discovery Discoverer
1807 Sir Humphry Davy (1778-1829)

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