1.

Pentavalence in phosphorous is more stable when compared to that of nitrogen even though they belong to same group is due to

Answer»

<P>reactivity of phosphorous
inert nature of NITROGEN
dissimilar electronic configuration
larger size of phosphorus atom.

Solution :Electronic configuration of nitrogen atom is `1s^(2)2s^(2)2p^(3)`. Only three unpaired ELECTRONS of p orbital take part in bonding so trivalence is STABLE in this case. Since there is no d orbital in second orbit pentavalence is not stable.Electronic configuration of phosphorus atom `1s^(2)2s^(2)2p^(6)3s^(2)2p^(3)3d^(0)`. It can use three unpaired electrons of 3p orbital to exhibit trivalence and also can use 3d orbital to exhibit pentavalency `[1s^(2)2s^(2)2p^(6)3s^(1)3p^(3)3d^(1)]`.


Discussion

No Comment Found

Related InterviewSolutions