Which is strongest Lewis base [CPMT 1994]

1.	Which is strongest Lewis base [CPMT 1994]
A.	\[Sb{{H}_{3}}\]
B.	\[As{{H}_{3}}\]
C.	\[P{{H}_{3}}\]
D.	\[N{{H}_{3}}\]
Answer» E.

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Which is strongest Lewis base [CPMT 1994]

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