Question

Bond angle is minimum for.

• A. $H_{2}O$
• B. $H_{2}S$
• C. $H_{2}Se$
• D. $H_{2}Te$

Answer 1

Answer: (D)

$H_{2}Te$

Answer 2

$H_{2}O$ $H_{2}S$ $CCl_{4} + I_{2} \rightarrow$ $H_{2}Te$

$104.5^{o}$ $2NaI + Cl_{2} \rightarrow 2KCl + I_{2}$ $91^{o}$ $90^{o}$

As we go down the group electronegativity decreases due to which repulsion between bonded pairs of electron also decreases. Hence, bond angle decreases.