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
