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Question

The sequence of the bond angles in OF2 and OHF and OH2 would be

A
OF2<OHF<OH2
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B
OH2<OF2<OHF
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C
OHF<OF2<OH2
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D
None of the above
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Solution

The correct option is A OF2<OHF<OH2
As we go from OH2 to OF2, the bond pair in O-X(where X=H,F) moves closer towards X, since the electronegativity of F is greater than that of O. Consequently the distance between the electrons increases, which further decreases the bond pair-bond pair repulsion, which decreases the bond angle. Therefore, the sequence of bond angle would be OF2<OHF<OH2

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