MolSynapsequestion bank

MolSynapse / Question bank / d- and f-Block Elements / Colour and magnetic properties

JEE Main levelOne or more correct optionsDifficulty 2 of 3df141

The colour of which of the following species in aqueous solution arises from d-d transitions?

A $[Cu (H X_{2} O) X_{4}] X^{2 +}$
B $MnO X_{4} X^{-}$
C $[Ti (H X_{2} O) X_{6}] X^{3 +}$
D $[Ni (H X_{2} O) X_{6}] X^{2 +}$

Answer: A, C, D

Ti(III)

d^{1}

, Ni(II)

d^{8}

and Cu(II)

d^{9}

all have partly filled d subshells, so d-d transitions give their colour.

MnO X_{4} X^{-}

is Mn(VII)

d^{0}

, and its colour is charge transfer.

Practice d- and f-Block Elements More on Colour and magnetic properties

Previous questionNext question

More questions on Colour and magnetic properties