MolSynapsequestion bank

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

NEET levelSingle correct optionDifficulty 1 of 3df117

The colour of aqueous potassium chromate, $K X_{2} CrO X_{4}$ , is:

Ayellow
Bcolourless
Corange
Dpurple

Answer: A

The

CrO X_{4} X^{2 -}

ion is yellow (charge transfer). It turns orange as

Cr X_{2} O X_{7} X^{2 -}

in acidic solution.

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

Previous questionNext question

More questions on Colour and magnetic properties

Which of the following ions is diamagnetic? NEET level
The intense purple colour of aqueous KMnO4 is due to: NEET level
Compounds of transition metals are generally coloured mainly because of: NEET level
Paramagnetism of a substance is due to the presence of: NEET level
Among the following ions, the highest spin-only magnetic moment is shown by: NEET level
The colour of hexaaquacobalt(II) ion, [Co(H2O)6]^2+, in aqueous solution is: NEET level