Which of the following has a trigonal bipyramidal geometry?

Which of the following has a trigonal bipyramidal geometry?

Step 1: Understand what trigonal bipyramidal geometry means. It is a shape where there are five bonds around a central atom, with three bonds in a plane and two above and below this plane.
Step 2: Identify the molecule in question, which is PCl5 (phosphorus pentachloride).
Step 3: Count the number of bonding pairs in PCl5. There are five chlorine atoms bonded to one phosphorus atom.
Step 4: Check for lone pairs on the central atom (phosphorus). In PCl5, there are no lone pairs.
Step 5: Since there are five bonding pairs and no lone pairs, the geometry of PCl5 is trigonal bipyramidal.

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