1.

Consider the following value of IE(ev) for elements W and X:- {:("Element",IE_(1),IE_(2),IE_(3),IE_(4),),(W,10.5,15.5,24.9,79.8,),(X,8,14.8,78.9,105.8,):} Other two elements Y and Z have outer electronic configuration ns^(2) np^(4) and ns^(2) np^(5) respectively. Accoring to given information which of the following compound (s) is/are not possible. (a) W_(2)Y_(3) (b) X_(2)Y_(3) ( c) WZ_(2) (d) XZ_(2)

Answer»

a,B
b,c
c,d
a,d

ANSWER :B


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