Question

Explain why nitrogen atoms join up to form nitrogen molecules

Answer 1

Nitrogen atom is unstable with 5 electrons .. It forms a triple bond with another nitrogen atom to have an octet Nd hence become stable

Answer 2

Because Atoms become stable when the achieve octet valence electrons (8 electrons in in outer most shell). Although most atoms (besides noble gases) do not have the stable octet valence electrons to start off with, when compounds are made, the octet valence electrons is made most of the time.