Which of the following is a correct statement ?

Options

A. Aquwous solution of `Cu^+ and Zn^(2+)` are colourless
B. Aqueous solution of `Cu^(2+) and Zn^(2+)` are colourless
C. Aqueous solution of `Fe^(3+)` is green in colour
D. Aqueous soltution of `MnO_4^-` is colourless

Answer

(a)

Explanation

(a)Both `Cu^+ and Zn^2+` ions do not have unpaired electrons, so they are colourless.
(b)`Cu^2+` is colourless since it does not contain unpaid electrons . (c)
`Fe^3+` is blue in colour
`(d)MnO^(-4)` is coloured due to charage transfer