Question

Which of the following has largest bond angle ?

• A. $NH_3$
• B. $PH_3$
• C. $AsH_3$
• D. $SbH_3$

Answer 1

Answer: (A)

$NH_3$

Answer 2

As we down the group 15, due to decrease in the electronegativity of central atom, the bond pairbond pair repulsions of M-H bond decreases so bond angle decreases.