Which statement is incorrect regarding the complex $[HgI_3]^{-}$?

What is the geometry of $[Ni(CO)_4]$?

Match the coordination number and type of hybridisation with the distribution of hybrid orbitals in space based on Valence Bond Theory.

Coordination number and type of hybridisation	Distribution of hybrid orbitals in space
$a. 4, sp^3$	$i. \text{trigonal bipyramidal}$
$b. 4, dsp^2$	$ii. \text{octahedral}$
$c. 5, sp^3d$	$iii. \text{tetrahedral}$
$d. 6, d^2sp^3$	$iv. \text{square planar}$

Select the correct option.

Which of the following complexes does not involve inner orbital hybridization?

How many unpaired electrons are present in the central metal ion of $[CoCl_4]^{2-}$?

Match the following based on valence bond theory $(VBT)$.

Hybridisation	Geometry	Complex structure
$(A) \ sp^3$	$(i) \ \text{Square planar}$	$(p) \ [Fe(CN)_6]^{3-}$
$(B) \ d^2sp^3$	$(ii) \ \text{Tetrahedral}$	$(q) \ [ZnCl_4]^{2-}$
$(C) \ dsp^2$	$(iii) \ \text{Octahedral}$	$(r) \ [Ni(NH_3)_4]^{2+}$
-	$(iv) \ \text{Linear}$	$(s) \ [Ag(CN)_2]^-$