Ion Color Properties

Front

Which ion among the following is colourless: Ti4+, Cr3+, V3+?

Back

Ti4+ is colourless because it has no d-electrons, leading to no d-d transitions that would absorb visible light.

Front

What is the color of the ion Fe3+ in solution?

Back

Fe3+ typically appears yellow to brown in solution due to d-d transitions in its d-electrons.

Front

Which ion is known to impart a green color to glass: Cu2+, Co2+, or Ni2+?

Back

Cu2+ is known to impart a green color to glass due to its specific electronic transitions.

Front

What is the color of the ion MnO4- in solution?

Back

MnO4- is purple in solution due to the presence of d-d transitions in the manganese ion.

Front

Transition elements generally form coloured compounds.why?

Back

Because of presence of unpaired d electrons, which undergoes d-d transition by absorption of energy from visible region and then the emitted light shows complementary colours. This is how transition elements form coloured compounds.