EVERYDAY SCIENCE

Detailed explanation-1: -If an atom loses or gains electrons, it will become a positively or negatively charged particle, called an ion. The loss of one or more electrons results in more protons than electrons and an overall positively charged ion, called a cation.

Detailed explanation-2: -Whenever there is a gain of electrons the element will acquire a negative charge also known as an anion while when an atom loses an electron, the element acquires a positive charge which is also known as a cation.

Detailed explanation-3: -Thus, to attain the noble gas configuration, a nitrogen atom would tend to gain 3 electrons. As a result of this, the ionic charge on nitrogen would be 3-. Thus, nitrogen gain electrons, and its ion exists as N3− .