MetallurgyHard
Question
The correct decreasing order of basic strength is :
Options
A.AsH3 > SbH3 > PH3 > NH3
B.SbH3 > AsH3 > PH3 > NH3
C.NH3 > PH3 > AsH3 > SbH3
D.PH3 > AsH3 > SbH3 > NH3
Solution
Lone pair of electrons on N, P, As and Sb are dispersed in a greater way as the size ofatom increases from N to Sb. Therefore NH3 is most basic and SbH3 is least basic
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