Question

How many electrons does phosphorus need to gain to have a stable outer electron shell

Answer 1

Answer:

3

Explanation:

Phosphorous valence is 5. so to get stable electronic configuration it has to gain 3 more electrons to its outer shell

Answer 2

Answer:

3

Explanation:

luckily, every phosphorus atom is looking to gain 3 electrons. It's a perfect match. But something to notice though, look how they have a bond with six electrons. That is called triple bond.