In which of the following compound all the bond angles are equal :-

Options

A. `SF_(4)`
B. `C Cl_(4)`
C. `CHCl_(3)`
D. `XeF_(6)`

Explanation

To determine which of the given compounds has all equal bond angles, we will analyze each compound step by step.

### Step 1: Analyze SF4 (Sulfur Tetrafluoride)
1. **Valence Electrons**: Sulfur has 6 valence electrons, and each fluorine has 7. Therefore, SF4 has a total of 6 + (4 × 7) = 34 valence electrons.
2. **Molecular Geometry**: SF4 has a seesaw shape due to one lone pair on sulfur. The presence of this lone pair causes unequal bond angles because of lone pair-bond pair repulsion being greater than bond pair-bond pair repulsion.
3. **Conclusion**: Bond angles in SF4 are not equal.

### Step 2: Analyze CCl4 (Carbon Tetrachloride)
1. **Valence Electrons**: Carbon has 4 valence electrons and each chlorine has 7. Therefore, CCl4 has a total of 4 + (4 × 7) = 32 valence electrons.
2. **Molecular Geometry**: CCl4 has a tetrahedral shape with no lone pairs. All bond angles are equal at 109.5°.
3. **Conclusion**: Bond angles in CCl4 are equal.

### Step 3: Analyze CHCl3 (Chloroform)
1. **Valence Electrons**: Carbon has 4 valence electrons, hydrogen has 1, and chlorine has 7. Therefore, CHCl3 has a total of 4 + 1 + (3 × 7) = 25 valence electrons.
2. **Molecular Geometry**: CHCl3 has a tetrahedral shape but contains different atoms (H and Cl). The bond angles will not be equal due to the difference in electronegativity and size between H and Cl.
3. **Conclusion**: Bond angles in CHCl3 are not equal.

### Step 4: Analyze XeF6 (Xenon Hexafluoride)
1. **Valence Electrons**: Xenon has 8 valence electrons and each fluorine has 7. Therefore, XeF6 has a total of 8 + (6 × 7) = 50 valence electrons.
2. **Molecular Geometry**: XeF6 has a distorted octahedral shape due to the presence of one lone pair. This distortion leads to unequal bond angles.
3. **Conclusion**: Bond angles in XeF6 are not equal.

### Final Conclusion
After analyzing all the compounds, the only compound with all equal bond angles is **CCl4**.