Final answer:
The central atom in the ClF4 ion has three nonbonded electron pairs and one bonded electron pair in its valence shell.
Step-by-step explanation:
The central atom in the ClF4 ion has three nonbonded electron pairs and one bonded electron pair in its valence shell. The Cl atom has a total of seven valence electrons and forms four covalent bonds with the four fluorine atoms. This leaves three lone pairs of electrons around the central Cl atom, which are not involved in bonding.