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Potassium
Atomic Number: 19
Atomic mass: 39.0983
Melting point: 63.2 °C
Boiling point: 760 °C
Electronegativity: 0.8
discoverer: Sir Davy
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Description:
potassium is a soft silvery-white metal. it reacts with water which it instantly release hydrogen, which burns to flames.
Atom model
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