Match the complexes given in column I with the oxidation states of central metal atoms given in column II and mark the appropriate choice.
Column I
( Complex) Column II ( Oxidation state of central atom )
(A) $K_{3} [C O (C_{2} O_{4})_{2} C l_{2}]$ (i) $0$
(B) $[P t (C_{2} H_{4} C l_{3}]^{-}$ (ii) $+ 1$
(C) $[F e (H_{2} O)_{5} N O] S O_{4}$ (iii) $+ 3$
(D) $[N i (C O)_{4}]$ (iv) $+ 2$

(A) - (ii), (B) - (i), (C) - (iv), (D) - (iii)

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(A) - (iv), (B) - (ii), (C) - (i), (D) - (iii)

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(A) - (iii), (B) - (iv), (C) - (ii), (D) - (i)

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(A) - (i), (B) - (ii), (C) - (iii), (D) - (iv)

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Solution

The correct option is C (A) - (iii), (B) - (iv), (C) - (ii), (D) - (i)
$(A) K_{3} [C O (C_{2} O_{4}) C l_{2}]$
$\Rightarrow [C O (C_{2} O_{4})_{2} C l_{2}]^{3 -}$
$\Rightarrow m - 2 (2) - 2 = - 3$
$m = 3$
$(B) [P t (C_{2} H_{4}) C l_{3}]^{- 1}$
$m + 0 - 3 = - 1$
$m = + 2$
$(C) [F e (H_{2} O)_{5} (N O)]^{2 +}$
$m + 1 = 2$
$m = 1$
$(D) [N i (C O)_{4}]$
$= m + 0 = 0$
$m = 0$

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Choose the correct option that matches correctly. There can be multiple matches.

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	Column I ( Complex)		Column II ( Oxidation state of central atom )
(A)	$K_{3} [C O (C_{2} O_{4})_{2} C l_{2}]$	(i)	$0$
(B)	$[P t (C_{2} H_{4} C l_{3}]^{-}$	(ii)	$+ 1$
(C)	$[F e (H_{2} O)_{5} N O] S O_{4}$	(iii)	$+ 3$
(D)	$[N i (C O)_{4}]$	(iv)	$+ 2$

Match the complexes given in column I with the oxidation states of central metal atoms given in column II and mark the appropriate choice.Column I ( Complex)Column II ( Oxidation state of central atom )(A)K3[CO(C2O4)2Cl2](i)0(B)[Pt(C2H4Cl3]−(ii)+1(C)[Fe(H2O)5NO]SO4(iii)+3(D)[Ni(CO)4](iv)+2

The correct option is C (A) - (iii), (B) - (iv), (C) - (ii), (D) - (i)(A)K3[CO(C2O4)Cl2]⇒[CO(C2O4)2Cl2]3−⇒m−2(2)−2=−3m=3(B)[Pt(C2H4)Cl3]−1m+0−3=−1m=+2(C)[Fe(H2O)5(NO)]2+m+1=2m=1(D)[Ni(CO)4]=m+0=0m=0