Question

The number of molecules/ions having trigonal bipyramidal shape is:
$\text{PF}_5, \, \text{BrF}_5, \, \text{PCl}_5, \, [\text{PtCl}_4]^{2-}, \, \text{BF}_3, \, \text{Fe(CO)}_5$

Answer 1

PF5, PCl5, and Fe(CO)5 have trigonal bipyramidal geometry.

BrF5: square pyramidal

[PtCl4]2−: square planar

BF3: trigonal planar