Explain why compounds of Fe^2+ are coloured in solution. (4 marks)

Fe2+ has an electron configuration of 1s22s22p63s23p63d6. When the ligands of the solution bind to the metal ion the d-orbitals are split which creates an energy gap that allows for electron transitions. The d-electrons absorb light of energy equal to the energy gap. Electrons in lower energy orbitals are promoted to higher energy orbitals. The wavelengths of light that are not absorbed by the electrons are transmitted which give the solution a green colour.

BG
Answered by Ben G. Chemistry tutor

3959 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

Describe how to test for and identify halide ions in a solution.


State and explain the general trend in first ionization energy as you move across the period from left to right.


Why is there a difference in mechanism between tertiary halogenoalkanes and primary halogenoalkanes in nucleophilic substitution?


Explain what is meant by the term "rate of reaction".


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning