Question

1 mark for review
which of the following molecules has the shortest bond length?
a n₂
b o₂
c cl₂
d i₂

Explanation:

Step1: Analyze bond order

Bond order is inversely related to bond length. Higher bond order means shorter bond length.

• \(N_2\) has a bond order of \(3\) (\(N\equiv N\)).
• \(O_2\) has a bond order of \(2\) (\(O = O\)).
• \(Cl_2\) has a bond order of \(1\) (\(Cl - Cl\)).
• \(I_2\) has a bond order of \(1\) (\(I - I\)).

Step2: Compare bond lengths

Since \(N_2\) has the highest bond order among the given molecules, it will have the shortest bond length.

Answer:

A. \(N_2\)