Minimum `F-S-F` bond angle present in :

Options

A. `SSF_(2)`
B. `SF_(6)`
C. `SF_(2)`
D. `F_(3)SSF`

Answer

To determine the minimum F-S-F bond angle present in the given compounds, we will analyze the molecular geometry of each option step by step.

### Step 1: Analyze SSF2
- **Structure**: The structure of SSF2 consists of one sulfur (S) atom bonded to two fluorine (F) atoms and has one lone pair on the sulfur atom.
- **Geometry**: The presence of the lone pair distorts the bond angles. The ideal bond angle for a tetrahedral arrangement is 109.5°, but due to the lone pair, the F-S-F bond angle will be less than this.
- **Conclusion**: The F-S-F bond angle in SSF2 is less than 109°.

### Step 2: Analyze SF6
- **Structure**: In SF6, one sulfur atom is surrounded by six fluorine atoms.
- **Geometry**: This configuration leads to an octahedral geometry where the bond angles between the fluorine atoms are 90°.
- **Conclusion**: The F-S-F bond angle in SF6 is less than 90°.

### Step 3: Analyze SF2
- **Structure**: The SF2 molecule consists of one sulfur atom bonded to two fluorine atoms, with two lone pairs on the sulfur atom.
- **Geometry**: The presence of two lone pairs leads to a bent molecular shape. The ideal bond angle in a tetrahedral arrangement is 109.5°, but the lone pairs push the bond angle down.
- **Conclusion**: The F-S-F bond angle in SF2 is also less than 109°.

### Step 4: Analyze SF3
- **Structure**: In SF3, one sulfur atom is bonded to three fluorine atoms and has one lone pair.
- **Geometry**: The molecular shape is trigonal pyramidal due to the lone pair, which also causes the bond angles to be less than the ideal tetrahedral angle.
- **Conclusion**: The F-S-F bond angle in SF3 is less than 109°.

### Step 5: Compare the Bond Angles
- From the analysis:
- SSF2: F-S-F bond angle < 109°
- SF6: F-S-F bond angle < 90°
- SF2: F-S-F bond angle < 109°
- SF3: F-S-F bond angle < 109°

### Final Conclusion
The minimum F-S-F bond angle is found in **SF6**, where it is less than 90°. Thus, the correct answer is **SF6**.

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