Answer:
Covalent bonds for all molecules
Single bond for Cl2
Double bond for O2
Triple bond for N2
Strongest: N2
Weakest: Cl2
Step-by-step explanation:
Cl2, O2, and N2 are all covalent molecules.
However:
When 2 Chlorine atoms bond, they form a single bond.
When 2 Oxygen atoms bond, they form a double bond.
When 2 Nitrogen atoms bond, they form a triple bond.
The bond length of a triple bond is shorter than double bond and the double bond is shorter than a single bond.
The bond strength is the direct opposite of it, which means that triple bond has the strongest bonding. Therefore, N2 has the strongest bond and Cl2 has the weakest bond.
The following image is attached to help you visualize the situation.
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