Q.

Given below are two statements:                                                                      [2025]

Statement I: A hypothetical diatomic molecule with bond order zero is quite stable.
Statement II: As bond order increases, the bond length increases.

In the light of the above statements, choose the most appropriate answer from the options given below:

1 Statement I is true but statement II is false.  
2 Statement I is false but statement II is true.  
3 Both statement I and statement II are true.  
4 Both statement I and statement II are false.  

Ans.

(4)

Diatomic molecule with bond order zero does not exist. With increase in bond order, bond length decreases. Thus both statement-I and statement-II are false.