Nitrogen forms only NCI3 but phosphorus form pci3 and pci5 both, explain?
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Nitrogen has only 3 valence electrons ( Final Electronic Configuration: 2s2 2p3) thus it can only bond with three other species. Also species in the second period have to follow the octet rule when bonding whenever possible. The octet rule is the second period element must have 4 electron pairs (8e-) around it. This won’t be obeyed in NCl5.
However Phosphorous is in the third period and elements from this period and after can exceed the octet rule as they have empty ‘ d’ orbitals( They are present even though electrons may not have filled into them). Thus by way of dative bonds PCl5 can form.
However Phosphorous is in the third period and elements from this period and after can exceed the octet rule as they have empty ‘ d’ orbitals( They are present even though electrons may not have filled into them). Thus by way of dative bonds PCl5 can form.
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