Ncert Exercises & Solutions

Match the solutions given in Column I with the colours given in Column II.

	Column I (Aqueous solution of salt)		Column II (Colour)
A.	FeSO₄ .7H₂O	1.	Green
B.	NiCl₂. 4H₂O	2.	Light pink
C.	MnCl₂.4H₂O	3.	Blue
D.	CoCl₂. 6H₂O	4.	Pale green
		5.	Pink

Codes:

HINT:

{MnCl}_{2}

.

4 H_{2} O

is light pink colour.

Explanation:

The d block complex shows colour because of the d-d transition.

Hence, option fourth is the correct answer.