Question

calculate No. of electron, Proton,
neotron, valency and electronic
configuration of 39 k.
19​

Answer 1

Explanation:

Potassium (K)

• Atomic Number (Z) = 19
• Atomic Mass (A) = 39

No. of electrons = No. of protons = Z

• No. of electrons = 19
• No of protons = 19

No. of neutrons = A-Z

= 39 - 19 = 20

Valency = 1

Electronic Configuration = 2,8,8,1