Deduce the shape of
(1) `SO_3` (2) `SO_3^(-2)` (3) `BF_3` (4) `BF_4^(-)` (5) `NF_3`

Explanation

To deduce the shapes of the molecules `SO3`, `SO3^(-2)`, `BF3`, `BF4^(-)`, and `NF3`, we will follow these steps:

### Step 1: Determine the hybridization and shape of `SO3`

1. **Valence Electrons Calculation**:
- Sulfur (S) is in group 16 and has 6 valence electrons.
- There are no monovalent atoms attached.
- Total = 6 (from S) + 0 (monovalent) = 6.
...