Potassium (K)

Potassium (K)

Atomic Number: 19
Atomic Weight: 39.09
Melting Point: 63.65
Boiling Point: 774
Specific Gravity: 0.862
Valences: 1

Potassium was discovered by Davy in 1807. Potassium is commercially obtained from potash. Potassium is never found free in nature thus its compounds are very important. This element is essential to plant growth, so it is always found in plant fertilizers. Humans can obtain Potassium by eating bananas - necessary in a healthy diet. [LM] {RW}