Which of the following molecule have same structure and shape ?

Options

A. `IF_(7)`
B. `[AlF_(6)]^(3-)`
C. `BrF_(5)`
D. `XeOF_(4)`

Explanation

To determine which of the given molecules have the same structure and shape, we need to analyze the molecular geometry and hybridization of each molecule. Here’s a step-by-step breakdown of the analysis:

### Step 1: Analyze IF7
1. **Valence Electrons**: Iodine (I) has 7 valence electrons, and each Fluorine (F) has 7 valence electrons. Since there are 7 Fluorine atoms, we have a total of 7 bond pairs.
2. **Lone Pairs**: There are no lone pairs on Iodine.
3. **Steric Number**: The steric number is 7 (7 bond pairs + 0 lone pairs).
4. **Hybridization**: The hybridization is sp³d³.
5. **Shape and Structure**: The shape is pentagonal bipyramidal, and the structure is also pentagonal bipyramidal.

### Step 2: Analyze AlF6³⁻
1. **Valence Electrons**: Aluminum (Al) has 3 valence electrons, and with a -3 charge, it effectively has 6 valence electrons from Fluorine. This results in 6 bond pairs.
2. **Lone Pairs**: There are no lone pairs on Aluminum.
3. **Steric Number**: The steric number is 6 (6 bond pairs + 0 lone pairs).
4. **Hybridization**: The hybridization is sp³d².
5. **Shape and Structure**: The shape is octahedral, and the structure is also octahedral.

### Step 3: Analyze BrF5
1. **Valence Electrons**: Bromine (Br) has 7 valence electrons, and with 5 Fluorine atoms, it forms 5 bond pairs.
2. **Lone Pairs**: There is 1 lone pair on Bromine.
3. **Steric Number**: The steric number is 6 (5 bond pairs + 1 lone pair).
4. **Hybridization**: The hybridization is sp³d².
5. **Shape and Structure**: The shape is square pyramidal, while the structure is octahedral. They are different.

### Step 4: Analyze XeF4
1. **Valence Electrons**: Xenon (Xe) has 8 valence electrons, and it forms 4 bond pairs with Fluorine.
2. **Lone Pairs**: There are 2 lone pairs on Xenon.
3. **Steric Number**: The steric number is 6 (4 bond pairs + 2 lone pairs).
4. **Hybridization**: The hybridization is sp³d².
5. **Shape and Structure**: The shape is square planar, while the structure is octahedral. They are different.

### Conclusion
From the analysis:
- **IF7** has the same shape and structure (pentagonal bipyramidal).
- **AlF6³⁻** also has the same shape and structure (octahedral).
- **BrF5** and **XeF4** have different shapes and structures.

### Final Answer
The molecules that have the same structure and shape are **IF7** and **AlF6³⁻**.