what is the hybridization of ClF3? and BrF3
AB5 (such as PF5) is trigonal bipyramidal and sp3d hybridization.
SF4 is an example of AB4U which is trigonal bipyramidal and sp3d hybridizaton.
ClF3 and BrF3 are examples of AB3U2 which we would think would be trigonal bipyramidal and sp3d hybridization, also.