Amongst the following , molecule having maximum bond angles of `90^(@)` is

Options

A. `XeF_(4)`
B. `XeF_(6)`
C. `SF_(6)`
D. `IF_(7)`

Answer

To determine which molecule has the maximum bond angles of 90 degrees among the given options, we will analyze each molecule step-by-step.

### Step 1: Analyze XeF4
- **Structure**: Xenon (Xe) is the central atom bonded to 4 fluorine (F) atoms and has 2 lone pairs.
- **Geometry**: The molecular geometry is square planar due to the arrangement of the fluorine atoms in the plane and the lone pairs above and below the plane.
- **Bond Angles**: In XeF4, the bond angles between the fluorine atoms are 90 degrees. There are a total of 4 bond angles of 90 degrees.

### Step 2: Analyze XeF6
- **Structure**: Xenon (Xe) is the central atom bonded to 6 fluorine (F) atoms and has 1 lone pair.
- **Geometry**: The molecular geometry is distorted octahedral.
- **Bond Angles**: In XeF6, there are 8 bond angles of 90 degrees due to the arrangement of the fluorine atoms around the central xenon atom.

### Step 3: Analyze SF6
- **Structure**: Sulfur (S) is the central atom bonded to 6 fluorine (F) atoms.
- **Geometry**: The molecular geometry is octahedral.
- **Bond Angles**: In SF6, there are 12 bond angles of 90 degrees (4 in the plane and 4 above and below the plane).

### Step 4: Analyze IF7
- **Structure**: Iodine (I) is the central atom bonded to 7 fluorine (F) atoms.
- **Geometry**: The molecular geometry is pentagonal bipyramidal.
- **Bond Angles**: In IF7, there are 10 bond angles of 90 degrees (5 from the top and 5 from the bottom).

### Conclusion
After analyzing all the given molecules:
- XeF4 has 4 bond angles of 90 degrees.
- XeF6 has 8 bond angles of 90 degrees.
- SF6 has 12 bond angles of 90 degrees.
- IF7 has 10 bond angles of 90 degrees.

The molecule with the maximum bond angles of 90 degrees is **SF6** with a total of 12 bond angles.

### Final Answer
The molecule having the maximum bond angles of 90 degrees is **SF6**.