Chemistry · Class 12 · Chapter 5
Coordination Compounds
13 lessons 92 min 2 simulations
Coordination compounds are metal atoms or ions holding a fixed set of ions or molecules through donated electron pairs. The chapter starts from Werner's experiments on cobalt-ammonia chlorides, sets out the vocabulary and IUPAC naming, classifies isomers, and explains bonding, magnetism and colour with valence bond and crystal field theory, before metal carbonyls and everyday uses in analysis, metallurgy, biology and medicine.
What the exam asks
NEET tests coordination number and oxidation state, IUPAC names, counting geometrical and optical isomers, hybridisation with magnetic behaviour (inner versus outer orbital, [NiCl₄]²⁻ versus [Ni(CN)₄]²⁻), the spectrochemical series, high and low spin configurations, and colour from absorbed light. Marks are lost by counting ligands instead of donor atoms, reporting the absorbed colour as the colour seen, and missing that tetrahedral complexes have no geometrical isomers.
Lessons
13 lessons · 92 min
1Werner's theoryNCERT §5.19 min 1 sim2Ligands and denticityNCERT §5.26 min3Coordination number and oxidation numberNCERT §5.26 min4Formulas and namesNCERT §5.36 min5Geometrical and optical isomerismNCERT §5.4.1; §5.4.26 min6Structural isomerismNCERT §5.4.3–5.4.65 min7Valence bond theoryNCERT §5.5.16 min8Magnetic properties and limits of VBTNCERT §5.5.2; §5.5.36 min9Crystal field theoryNCERT §5.5.410 min 1 sim10Colour in coordination compoundsNCERT §5.5.5; §5.5.66 min11Metal carbonylsNCERT §5.65 min12Importance and applicationsNCERT §5.76 min13Chapter reviewMust-know facts, traps and formulas15 min