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Hydronium Ion

Bond angle in...

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Bond angle in water molecules is 104.5^° instead of109 28' mainly because of (1) Lone pair-bond pair repulsion (2) Bond pair-lone pair repulsion (3) Lone pair-lone pair replusion (4) Bond pair-bond pair repulsion

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B r F_{3}

molecule, the lone pairs occupy equatorial positions to reduce

Q. Lone pair-lone pair repulsions are greater than bond pair-bond pair repulsions because:

Q. Select the correct code for the following repulsion orders, according to VSEPR theory
(I) lone pair-lone pair

>

lone pair-bond pair
(II) lone pair-bond pair

>

bond pair-bond pair
(III) lone pair-lone pair

>

bond pair-bond pair
(IV) lone pair-bond pair

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lone pair-lone pair

Q. Write the order of repulsions among the electron pairs.

Lone pair - lone pair > lone pair - bond pair > bond pair - bond pair

Q. Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The H–O–H bond angle in water molecule is

{104.5}^{o}

.
Reason R : The lone pair–lone pair repulsion of electrons is higher than the bond pair-bond pair repulsion.

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