Q.

Bond angle (H-O-H) in H2O is

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a

109°28'

b

90°

c

104°30'

d

107°18'

answer is B.

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Detailed Solution

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In H2O, central atom 'O'   consists of two lone pairs and two bond pairs and It undergoes sp3 hybridization, So there exists lp-lp repulsion which is more than lp-bp repulsion than bp-bp repulsion. Thus, the angle is reduced to 104.5° from 109.5°.

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