Vsepr Theory And Shape Of Molecules

Step 1: Concept
Lone pairs are calculated using valence electrons and bonding electrons.
Step 2: Analysis of
Sulfur has 6 valence electrons. It forms 4 single bonds with Fluorine (using 4 electrons). Remaining electrons = (which forms 1 lone pair).
Step 3: Analysis of
Oxygen has 6 valence electrons. It forms 2 single bonds with Hydrogen (using 2 electrons). Remaining electrons = (which forms 2 lone pairs).
Step 4: Conclusion
Hence, the number of lone pairs is 1 and 2 respectively.
Final Answer:(A)

The correct option is (B) : Square pyramidal