Which of the following is true for the $[NiCl_4]^{2-}$ complex?

Which of the following has a square planar geometry? $(Co = 27, Ni = 28, Fe = 26, Pt = 78)$

Match the complexes in List-$I$ with their hybridization in List-$II$.

List-$I$ (Complex)	List-$II$ (Hybridization)
$A. Ni(CO)_4$	$I. sp^3d^2$
$B. [Ni(CN)_4]^{2-}$	$II. d^2sp^3$
$C. [Co(NH_3)_6]^{3+}$	$III. dsp^2$
$D. [CoF_6]^{3-}$	$IV. sp^3$

Which of the following statements is correct?

The coordination complex $[Co(OH_2)_6]^{2+}$ has one unpaired electron. Which of the following statements are true?
$(i)$ The complex is octahedral.
$(ii)$ The complex is an outer orbital complex.
$(iii)$ The complex is diamagnetic.

Select the incorrect match.