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Q.

The bond angle in H2S is 97° and its dipole. moment is 1.5 D. The S-H bond distance is 0.15 run. Therefore, approximate percentage ionic character of S-H bond is (neglect the effect of dipole moment of lone pair on sulphur atom in H2S).

 (Given : cos97=0.12 and 0.88=0.94

 

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a

10%

b

32%

c

16%

d

84%

answer is B.

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Detailed Solution

1.5=μ2+μ2+2μ2cos97μ=1.13D

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 Percentage ionic character of S-H bond is,% Ionic character =1.13×10184.8×1010×1.5×108×100=16%

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