Which one of the following has a square planar geometry ? <br> (At. no. Co = 27, Ni = 28, Fe = 26, Pt = 78)

Question

( A ) $[CoCl_4]^{2-}$
( B ) $[NiCl_4]^{2-}$
( C ) $[FeCl_4]^{2-}$
( D ) $[PtCl_4]^{2-}$