Question

Match the complex ions given in column I with their colour given in column II and mark the appropriate choice.

Column I (Complex ion)		Column II (Colour)
(A)	[CoF6]3−	(i)	Blue – green
(B)	[Co(NH3)6]3+	(ii)	Pale yellow
(C)	[Co(H2O)6]3+	(iii)	Green
(D)	[Co(CN)6]3−	(iv)	Yellow-orange

• A. (A) $\rightarrow$ (iii), (B) $\rightarrow$ (iv), (C) $\rightarrow$ (i),(D) $\rightarrow$ (ii)
• B. (A) $\rightarrow$ (iii), (B) $\rightarrow$ (iv), (C) $\rightarrow$ (ii),(D) $\rightarrow$ (i)
• C. (A) $\rightarrow$ (i), (B) $\rightarrow$ (iii), (C) $\rightarrow$ (iv),(D) $\rightarrow$ (ii)
• D. (A) $\rightarrow$ (iv), (B) $\rightarrow$ (i), (C) $\rightarrow$ (iii),(D) $\rightarrow$ (ii)

Answer 1

Answer: (A)

(A) $\rightarrow$ (iii), (B) $\rightarrow$ (iv), (C) $\rightarrow$ (i),(D) $\rightarrow$ (ii)

Answer 2

(A) $\rightarrow$ (iii), (B) $\rightarrow$ (iv), (C) $\rightarrow$ (i),(D) $\rightarrow$ (ii)