In \(\left[N i\left(P P h_{3}\right)_{2} C l_{2}\right]\) both the ilgands \(P P h^{3}\) and \(C 1\) are weak and as such cannot pair up the d-electrons. Thus hybridisation is \(s p^{3}\) and shape is tetrahedral.
$(I)\, [Ma_3b_2c]^{n \pm}\,\,\, (II)\, [M(AB)_3]^{n \pm}\,\,\, (III)\, [Ma_2b_2c_2]^{n \pm}$
$(I)\,\,\,-\,\,\,(II)\,\,\,-\,\,\,(III)$