What is meant by the term bond order ? Calculate the bond order ? Calculate the bond order of : `N_(2),O_(2),O_(2)^(-)and O_(2)^(2-)`

Explanation

### Step-by-Step Solution:

**Step 1: Understanding Bond Order**
- Bond order is defined as the difference between the number of electrons in bonding molecular orbitals and the number of electrons in antibonding molecular orbitals, divided by two. It can also be interpreted as the number of chemical bonds between a pair of atoms.

**Formula:**
\[ \text{Bond Order} = \frac{(N_b - N_a)}{2} \]
Where:
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