The octahedral shape is associated with:-A PF5 B SF4 C SF6 D ClF3

The octahedral shape is associated with SF6.

Here's why:

Molecular geometry is determined by the Valence Shell Electron Pair Repulsion (VSEPR) theory. According to this theory, electron pairs will arrange themselves to minimize repulsion, and the shape of the molecule is determined by the number of bonding pairs and lone pairs in the molecule.

SF6 (Sulfur hexafluoride) has 6 bonding pairs and no lone pairs, resulting in an octahedral shape.

PF5 (Phosphorus pentafluoride) also has an octahedral electron geometry, but its molecular geometry is trigonal bipyramidal because there are no lone pairs.

SF4 (Sulfur tetrafluoride) has 4 bonding pairs and 1 lone pair, resulting in a see-saw shape.

ClF3 (Chlorine trifluoride) has 3 bonding pairs and 2 lone pairs, resulting in a T-shaped molecular geometry.

So, the answer is C, SF6.