How many electrons would a neutral atom of nitrogen need to gain in order to have a full valence electrons shell

Nitrogen atom has a valence electrons of 5 electrons. A full octet or full valence electrons shell is composed of 8 electrons. Hence, an additional of 4 electrons are needed for it to become full. this is achieved by covalent bonding where electrons are shared or ionic bonding where electrons are transferred.

Talc (french chalk) is the ingredient