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JEE Main levelSingle correct optionDifficulty 2 of 3cb091

The correct order of bond angle is

A $H X_{2} Se > H X_{2} S > H X_{2} O$
B $H X_{2} S > H X_{2} Se > H X_{2} O$
C $H X_{2} O > H X_{2} S > H X_{2} Se$
D $H X_{2} S > H X_{2} O > H X_{2} Se$

Answer: C

The bond angles are about

104. 5^{\circ}

,

9 2^{\circ}

and

9 1^{\circ}

. As the central atom becomes less electronegative and larger, bond pairs lie farther from it, repulsion falls, and the angle approaches

9 0^{\circ}

.

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