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.

Related Chemistry A Level answers

All answers ▸

What are the three pieces of evidence that disprove the Kekulé model of Benzene?


Why dose sodium oxide have a high melting point?


State and explain the tests necessary to positively identify an unknown sample as copper carbonate


How do acid buffer solutions work?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences