Bond angles of NH_3, PH_3, AsH_3 and SbH_3 are in the order

JEE Main Chemistry question

Bond angles of , , and are in the order

(A)PH_3 > AsH_3 > SbH_3 > NH_3
(B)SbH_3 > AsH_3 > PH_3 > NH_3
(C)SbH_3 > AsH_3 > NH_3 > PH_3
(D)NH_3 > PH_3 > AsH_3 > SbH_3Correct

Answer: (D)

Solution

Going down Group 15 from N to Sb, the central atom's electronegativity decreases and its size increases, so bonding electron pairs are held less tightly (increased -character, reduced -character in the

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Question ID VK-155954