please hep with chemistry

Question

Describe how the number of electrons in N changes and describe how the charge of N changes when nitrogen becomes a ion.

Answer 1

N (nitrogen) is atomic number 7. It has 7 protons and 7 electrons.

The electron configuration looks likes this...

1s² 2s² 2p³

If N is to become an ion, it will want to gain 3 more electrons in order to complete the p orbital and make 8 (octet) electrons in the 2nd energy level (stable). This would make the configuration 1s² 2s² 2p⁶ and since it gained 3 electrons, it would have a 3- charge.