Question

Which of the following changes in the respective bond order values are caused by removal of an electron from N$_2$ and F$_2$ molecules?

• A. decrease by 0.5 in both
• B. increase by 0.5 in both
• C. increase by 0.5 in the former and decrease by 0.5 in the later
• D. decrease by 0.5 in the former and increase by 0.5 in the later
• E. no change in both

Hint:

Removing antibonding electron increases bond order.

Answer 1

The Correct Option is C

Understanding the Concept: Bond order: \[ BO = \frac{N_b - N_a}{2} \]

Step 1: N$_2$ configuration. Bond order = 3 Removing electron from bonding orbital: \[ BO = 2.5 \Rightarrow \text{decrease} \]

Step 2: F$_2$ configuration. Bond order = 1 Removing electron from antibonding orbital: \[ BO = 1.5 \Rightarrow \text{increase} \]

Step 3: Final Answer. \[ \boxed{\text{Decrease in N$_2$, increase in F$_2$}} \]