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Answer Posted / zeemam
Nitrogen has five valence electrons; that is, five
electrons in its outermost shell. These electrons may bond
covalently with the electrons in other atoms in order to
fulfill the "octet rule", which would give nitrogen the 8
valence electrons it wants.
We say that nitrogen has a valency of 3, meaning that it
wants three more electrons in its outer shell. NH3, for
instance, is an example of nitrogen bonding covalently with
three hydrogens (which each have one valence electron) to
give the nitrogen a full eight electron in its valence
shell. However, an atom may make more than one bond with
another atom. Keep this in mind.
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