Colour of Complexes Quizizz

In an octahedral complex, which d orbitals are raised in energy compared to a tetrahedral complex?

• dxy, dyz and dxy

• dz^2 and dx^2-y^2

• dx^2 and dy^2

• All d orbitals are raised equally

Explain how the concept of d orbital splitting relates to the formation of coloured complexes in transition elements.

If a complex absorbs light in the blue region of the spectrum, which colour will it most likely appear to the human eye?

• Blue

• Green

• Orange

• Red

Describe how the observed colour of a complex ion is related to the light it absorbs.

Explain the role of ligands in influencing the colour of a complex. Give an example to support your answer.

A student conducted an experiment as shown in the picture. Which of the statements are correct for this experiment?

• 6 molecules of water are replaced by 6 molecules of ammonia

• 4 molecules of ammonia have substituted 4 molecules of water to give a pale blue solution

• The reaction involved is a ligand exchange reaction forming a dark blue solution

Use the complexes shown in the picture to write an equation showing ligand exchange.