Question

what is potassium ?

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Answer 1

Answer:

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Explanation:

Potassium is a chemical element with the symbol K and atomic number 19. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure. 

Symbol: K

Atomic mass: 39.0983 u

Atomic number: 19

Van der Waals radius: 280 pm

Period: period 4

Group: group 1: hydrogen and alkali metals.

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Answer 2

Potassium is a chemical element with the symbol K and atomic number 19. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure.

It's Symbolic form K .