In which of the following molecules/ions are all the bonds not equivalent?

SF₄​ do not have equal bonds, because of it structure .its structure is Trigonal bipyramidal. Sulfur in SF4​ show +4 oxidation state. sulfur has total six valence electrons, two form a lone pair. The fluorine-sulfur-fluorine bond angles are 120 degree in the trigonal plane and 90 degrees to the two fluorine atoms above and below the plane. So their bond lengths also varies.