Vsepr Theory And Shape Of Molecules

Step 1: Use VSEPR theory.
T-shape geometry corresponds to AX E type molecule.
This means 5 electron pairs (trigonal bipyramidal arrangement) with 2 lone pairs occupying equatorial positions.
Step 2: Analyze each option.
(A) XeF → AX E → Linear geometry.
(B) SO → AX E → Bent geometry.
(C) IO → AX → Tetrahedral geometry.
(D) BrF → AX E → Trigonal bipyramidal electron geometry with 2 lone pairs → T-shaped molecular geometry.
Step 3: Conclusion.
Therefore, BrF shows T-shaped geometry.

Step 1: Find total valence electrons.
Chlorine has 7 valence electrons.
Each fluorine has 7 valence electrons.
Total valence electrons:

Step 2: Determine number of electron pairs around central atom.
Chlorine forms three bonds with fluorine atoms.
Thus, 3 bonding pairs are present.
Remaining electrons on chlorine:
which form 2 lone pairs.
Hence total electron pairs around chlorine:

Step 3: Determine electron geometry.
Five electron pairs correspond to:

Step 4: Arrange lone pairs.
According to VSEPR, lone pairs occupy equatorial positions to minimize repulsion.
Two equatorial positions are occupied by lone pairs.
Remaining three positions are occupied by fluorine atoms.
Step 5: Molecular shape.
After placing lone pairs, the molecular geometry becomes: