Coordination Compounds
Kerala Board · Class 12 · Chemistry
Summary of Coordination Compounds for Kerala Board Class 12 Chemistry. Key concepts, important points, and chapter overview.
Overview
Coordination compounds are complex compounds containing a central metal atom or ion surrounded by molecules or ions called ligands. These compounds play crucial roles in biological systems (like chlorophyll and hemoglobin), industrial processes (catalysts and metal purification), and have unique pro
Key Concepts
Alfred Werner proposed that metals exhibit
Alfred Werner proposed that metals exhibit two types of valences: Primary valence (ionizable, equals oxidation state) and Secondary valence (non-ioniz
Ligands are molecules or ions
Ligands are molecules or ions that donate electron pairs to the central metal (Lewis bases). They can be monodentate (H₂O, NH₃), bidentate (ethylenedi
Key rules include
Key rules include: (1) Name cation before anion, (2) Within complex, ligands before metal alphabetically, (3) Anionic ligands end in 'o', (4) Use Gree
VBT explains bonding through hybridization
VBT explains bonding through hybridization of metal orbitals to accommodate ligand electrons. For octahedral complexes: d²sp³ (inner orbital, low-spin
CFT treats metal
CFT treats metal-ligand bonding as electrostatic interactions. Ligands create an electric field that splits d-orbitals into different energy levels. I
Learning Objectives
- Understand Werner's coordination theory and its postulates about primary and secondary valences
- Define key terms: ligand, coordination number, coordination sphere, and oxidation state of central metal
- Master IUPAC nomenclature rules for coordination compounds
- Apply Valence Bond Theory to explain bonding, hybridization, and magnetic properties
- Understand Crystal Field Theory and its applications in explaining color and magnetic behavior
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Coordination Compounds covers several key topics that are frequently asked in Kerala Board Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
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Sources & Official References
- Kerala Board of Public Examinations — keralapareekshabhavan.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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