Question

How many electrons are present in the valence shell of 15 Y

Answer 1

Answer:

The electronic configuration for 15 is 2,8,5.

Therefore, the valance electrons in the outermost shell will be 5.

Hope it helps you......

Answer 2

Explanation:

$shell \: of \: y \: with \: atomic \: number = 15 \\ \\ phosphorous \: has \: atomic \: number \: 15 \\ \\ phosphorous \: belongs \: to \: group \: 5a \: and \: period3$