Chemical Bonding And Molecular Structure Question 23

Question: The interatomic distances in $ H_2 $ and $ Cl_2 $ molecules are 74 and 198 pm respectively. The bond length of $ HCl $ is

Options:

A) 272 pm

B) 136 pm

C) 124 pm

D) 248 pm

Show Answer

Answer:

Correct Answer: B

Solution:

Middle length of $ H_2=74,pm $ Length of $ H=\frac{74}{2}=37pm $ Middle length of $ Cl_2=198,pm $ Length of $ Cl $

$ =\frac{198}{2}=99,pm $ Bond length of HCl = Length of H + Length of Cl = 37 + 99 = 136 pm



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