Match List - I with List - II :

	List - I		List -II
(A)	$${[PtC{l_4}]^{2 - }}$$	(I)	$$s{p^3}d$$
(B)	$$Br{F_5}$$	(II)	$${d^2}s{p^3}$$
(C)	$$PC{l_5}$$	(III)	$$ds{p^2}$$
(D)	$${[Co{(N{H_3})_6}]^{3 + }}$$	(IV)	$$s{p^3}{d^2}$$

Choose the most appropriate answer from the options given below :

The Crystal Field Stabilization Energy (CFSE) and magnetic moment (spin-only) of an octahedral aqua complex of a metal ion (M^z+) are $$-$$0.8 $$\Delta$$₀ and 3.87 BM, respectively. Identify (M^z+) :

The potassium ferrocyanide solution gives a Prussian blue colour, when added to :

Spin only magnetic moment in BM of [Fe(CO)₄(C₂O₄)]⁺ is :