question_answer

The bond order in\[CO_{3}^{2-}\]ion between

A)  zero             

B)  0.88          

C)  1.33              

D)  2

Correct Answer: C

Solution :

 We know that carbonate ion has following resonating structures Border order \[=\frac{total\text{ }number\text{ }of\text{ }bonds\text{ }between\text{ }atoms}{total\text{ }number\text{ }of\text{ }resonating\text{ }structures}\] \[=\frac{1+1+2}{3}=\frac{4}{3}\] \[=1.33\]