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Electronic Configuration and Oxidation States

Match the com...

Question

Match the complex (in Column I) with the oxidation number of Co (in Column II).

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Solution

(A) The oxidation number of Co in the complex $[C o (N C S) (N H_{3})_{5}] S O_{4}$ is +3.
(B) The oxidation number of Co in the complex $N a [C o (C O)_{4}]$ is -1.
(C) The oxidation number of Co in the complex $N a_{4} [C o (S_{2} O_{3})_{3}]$ is +2.
(D) The oxidation number of Co in the complex $C o_{2} (C O)_{8}$ is 0.

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Q. 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)	$+ 2$

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