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Q.

The internuclear distance in H₂ and Cl₂molecules are 74 and 198 pm respectively. The bond length of H-Cl may be:

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a

272 pm

b

248 pm

c

70 pm

d

136 pm

answer is C.

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Detailed Solution

$r_{H} = \frac{74}{2} = 37 pm \cdot r_{Cl} = \frac{198}{2} = 99 pm B.L. of HCl \approx r_{H} + r_{Cl}$

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The internuclear distance in H2 and Cl2 molecules are 74 and 198 pm respectively. The bond length of H-Cl may be: