Waec Model Questions Vol1 2024 Chemistry Question 2

Practice essay / theory question 2 from the 2024 Waec Model Questions Vol1 Chemistry examination. This question covers coordination chemistry, nomenclature of coordination compounds, oxidation states, electron configuration, isomerism .

Waec Model Questions Vol1 2024 Chemistry Essay / Theory
Topics: coordination chemistry nomenclature of coordination compounds oxidation states electron configuration isomerism
Question 2 WAEC_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • essay

The diagram shows an octahedral coordination complex. The central metal ion is cobalt (Co) and the six coordination sites are occupied by the ligands indicated: - Three ammonia molecules (NH₃) are labelled as L₁ and are positioned at the three mutually trans sites. - Two chloride ions (Cl⁻) are labelled as L₂ and occupy adjacent equatorial positions. - One nitrito ligand (NO₂⁻) is labelled as L₃ and occupies the remaining equatorial position. Using the information from the diagram, answer the following questions.

Question Parts

( a )
Write the correct IUPAC name of the complex, including the oxidation state of the metal.
( b )
Determine the oxidation state of the cobalt ion in the complex.
( c )
Calculate the number of d‑electrons present in the cobalt ion after oxidation.
( d )
Discuss the type of geometric isomerism possible for this complex and give the name of one alternative isomer that could be formed by rearranging the ligands.

Detailed Solution & Marking Scheme

Get the step-by-step solution, key points required by examiners and detailed marking guidance through the Edcrib AI Tutor.

Reveal Answer

About This Question

This is Waec Model Questions Vol1 2024 Chemistry Question 2. It is one of the essay questions from the 2024 Waec Model Questions Vol1 Chemistry examination.

The question covers coordination chemistry, nomenclature of coordination compounds, oxidation states, electron configuration, isomerism .

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support