Question

Question: Complete the following Lewis structure by adding bonds (not atoms), and then indicate the longest bond:

Short answer

The Lewis Structure with longest $\mathrm{C}-\mathrm{C}$ bond is as follows –

Step-by-step solution

Concept Introduction

Chemical bonding is the creation of a chemical compound by forming a chemical link between two or more atoms, molecules, or ions. The atoms in the resultant molecule are held together by chemical bonds.

Adding the bonds

Observe the Lewis structure –

Add the single and double bonds wherever required –

Since single bond is longest as compared to double and triple, therefore $\mathrm{C}-\mathrm{C}$ is the single bond which is the longest.

Therefore, $\mathrm{C}-\mathrm{C}$ are the longest bonds.