Science, asked by amazingfida, 3 months ago

An atom has four shells and 19 protons in its nucleus , what is its valency

Answers

Answered by omsudarshan710

0

Answer:

1

Explanation:

four shell- 2,8,8,16

nucleus- 19 - 2,8,8,1

hence valency electron will be 1.

2,8,8

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