Chemistry, asked by shubhimishra30jan, 3 months ago

Which element among these has a valency -3?

a) Oxygen
b) Nitrogen
c) Aluminium
d) Calcium

Answers

Answered by jainsonal11222

1

Answer:

The answer is option c)

Answered by harshitajoshi150505

1

Hi there ! Hope this helps.

Answer:

c) Aluminium

Explanation:

The electronic configuration of Aluminium(Atomic number 13) is-

Al=2,8,3

Thus, it will lose three electrons from the outermost shell, so as to have a valency of three.

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