P-Block Elements Ques 275

Question: The basic character of hydrides of the V-group elements decreases in the order

[CBSE PMT 1996]

Options:

A) $ SbH_3>PH_3>AsH_3>NH_3 $

B) $ NH_3>SbH_3>PH_3>AsH_3 $

C) $ NH_3>PH_3>AsH_3>SbH_3 $

D) $ SbH_3>AsH_3>PH_3>NH_3 $

Show Answer

Answer:

Correct Answer: C

Solution:

$ NH_3>PH_3>AsH_3>SbH_3 $ On moving down the group atomic size increases and availability of lone pair decreases. Hence, basic character decreases.



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