question_answer

Which of the following has a bond order of 1.75?

A)  \[ClO_{3}^{-}\]           

B)  \[ClO_{4}^{-}\]

C)  \[NO_{3}^{-}\]          

D)  \[CO_{3}^{2-}\]

Correct Answer: B

Solution :

 The resonating structures of\[ClO_{4}^{-}\]are as Bond order \[=\frac{total\text{ }number\text{ }of\text{ }bonds\text{ }between\text{ }Cl\text{ }and\text{ O}}{total\text{ }number\text{ }of\text{ }resonating\text{ }structures}\] \[=\frac{7}{4}=1.75\]