Electronic Spectra and Magnetic Properties — Prelims Questions

Which of the following complexes is expected to be diamagnetic?

The spin-only magnetic moment of $[Mn(H_2O)_6]^{2+}$ is approximately:

Which of the following complexes is expected to absorb light of the shortest wavelength?

Which of the following statements about d-d transitions is incorrect?

Calculate the spin-only magnetic moment for a $d^7$ octahedral complex in a strong ligand field.

Which of the following factors does NOT influence the magnitude of crystal field splitting energy ($\Delta$)?