In ammonia molecule(
[tex]NH_{3}[/tex]
), three hydrogen atoms form covalent bonds with nitrogen atom.
Explanation:
A covalent bond is an intramolecular interaction. It is formed by sharing of electron pairs between atoms to gain stability.
In [tex]NH_{3}[/tex] the molecule, three covalent bonds are present. A hydrogen atom has 1 valence electron. The nitrogen atom has 5 valence electrons. Thus it needs 3 more electrons to achieve stability.
So, now these atoms will share their electrons. Each hydrogen atom will share its electron with a nitrogen atom. Thus the octet of nitrogen is complete now. And the hydrogen atom has become stable. Thus 3 covalent bonds have been formed between these atoms forming a stable molecule of [tex]NH_{3}[/tex].
