The common oxidation state of 15th group elements is
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a
-3 only
b
-3 & +3
c
+3 & +5
d
-3 , +3 & +5
answer is D.
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Detailed Solution
15th group is a family of non-metals.The elements try to attain octet by gaining three electrons.Due to their higher E.N they show "-3" stateGround state configuration is : Three unpaired electrons (+3 state)Excited state configuration is :five unpaired electrons +5 state