Which molecule/ion out of the following does not contain unpaired electrons?

Options

A. `N_(2)^(+)`
B. `O_(2)`
C. `O_(2)^(2-)`
D. `B_(2)`

Explanation

To determine which molecule or ion does not contain unpaired electrons, we will analyze the electronic configurations of the given options using molecular orbital theory. Let's go through each option step by step.

### Step 1: Analyze N₂⁺ (Nitrogen Dication)
1. **Count Electrons**: Each nitrogen atom has 7 electrons. For N₂, there are 14 electrons. N₂⁺ has one electron removed, resulting in 13 electrons.
2. **Molecular Orbital Configuration**:
- σ1s² σ*1s²
- σ2s² σ*2s²
- σ2p_z²
- π2p_x¹ π2p_y¹
3. **Unpaired Electrons**: There are 2 unpaired electrons in the π2p_x and π2p_y orbitals.