Final answer:
Among the options provided, BrF5 has the square pyramidal geometry, which is due to its octahedral electron-group geometry with one lone pair on the central atom.
Step-by-step explanation:
The square pyramidal geometry is a molecular shape that occurs for molecules with an octahedral electron-group geometry and a central atom with one lone pair. Among the given choices, BrF5 exhibits square pyramidal geometry. BrF5 has six electron groups around the central bromine atom (five bond pairs and one lone pair), which corresponds to the octahedral electron-group geometry. However, one of these positions is occupied by a lone pair, leading to the square pyramidal molecular structure.