The shape of `SF_(6)` molecule is octahedral whereas that of `IF_(7)` is square pyramidal.

Explanation

To determine the shapes of the molecules SF₆ and IF₇, we will follow these steps:

### Step 1: Determine the Hybridization of SF₆
1. **Identify the central atom**: In SF₆, sulfur (S) is the central atom.
2. **Count the valence electrons**: Sulfur is in group 16, so it has 6 valence electrons.
3. **Count the number of monovalent atoms**: There are 6 fluorine (F) atoms, each contributing 1 electron.
4. **Apply the hybridization formula**:
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