Coordination Compounds
183 CBSE Class 12 Chemistry previous year questions (PYQs) from 5 papers, 2022 to 2026, with answers and worked solutions.
About this chapter
- Difficulty: 52 easy · 109 moderate · 22 hard.
- Most-asked subtopics: Bonding in Coordination Compounds (69), Definitions of Some Important Terms Pertaining to Coordination Compounds (34), Nomenclature of Coordination Compounds (27).
- Updated 13 September 2026.
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#1ModerateNomenclature of Coordination Compounds
#2ModerateBonding in Coordination Compounds
#3ModerateNomenclature of Coordination Compounds
#4ModerateBonding in Coordination Compounds
#5ModerateBonding in Coordination Compounds
#6EasyDefinitions of Some Important Terms Pertaining to Coordination Compounds
#7ModerateBonding in Coordination Compounds
#8EasyWerner’s Theory of Coordination Compounds
#9EasyWerner’s Theory of Coordination Compounds
#10EasyIsomerism in Coordination Compounds
#11EasyWerner’s Theory of Coordination Compounds
#12EasyDefinitions of Some Important Terms Pertaining to Coordination Compounds
#13ModerateIsomerism in Coordination Compounds
#14ModerateBonding in Coordination Compounds
#15ModerateBonding in Coordination Compounds
#16ModerateWerner’s Theory of Coordination Compounds
#17ModerateBonding in Coordination Compounds
#18ModerateBonding in Coordination Compounds
#19ModerateNomenclature of Coordination Compounds
#20HardBonding in Coordination Compounds
#21HardNomenclature of Coordination Compounds
#22HardBonding in Coordination Compounds
#23HardNomenclature of Coordination Compounds
#24EasyDefinitions of Some Important Terms Pertaining to Coordination Compounds
#25ModerateNomenclature of Coordination Compounds
#26ModerateBonding in Coordination Compounds
#27ModerateIsomerism in Coordination Compounds
#28ModerateNomenclature of Coordination Compounds
#29EasyDefinitions of Some Important Terms Pertaining to Coordination Compounds
#30EasyDefinitions of Some Important Terms Pertaining to Coordination Compounds
#31ModerateWerner’s Theory of Coordination Compounds
#32EasyWerner’s Theory of Coordination Compounds
#33EasyWerner’s Theory of Coordination Compounds
The oxidation number of the central atom in a complex is defined as the charge it would carry if all the ligands are removed along with the electron pairs that are shared with the central atom. Similarly the charge on the complex is the sum of the charges of the constituent parts i.e. the sum of the charges on the central metal ion and its surrounding ligands. Based on this, the complex is called neutral if the sum of the charges of the constituents is equal to zero. However, for an anion or cationic complex, the sum of the charges of the constituents is equal to the charge on the coordination sphere.#34EasyIsomerism in Coordination Compounds
The oxidation number of the central atom in a complex is defined as the charge it would carry if all the ligands are removed along with the electron pairs that are shared with the central atom. Similarly the charge on the complex is the sum of the charges of the constituent parts i.e. the sum of the charges on the central metal ion and its surrounding ligands. Based on this, the complex is called neutral if the sum of the charges of the constituents is equal to zero. However, for an anion or cationic complex, the sum of the charges of the constituents is equal to the charge on the coordination sphere.#35ModerateBonding in Coordination Compounds
The oxidation number of the central atom in a complex is defined as the charge it would carry if all the ligands are removed along with the electron pairs that are shared with the central atom. Similarly the charge on the complex is the sum of the charges of the constituent parts i.e. the sum of the charges on the central metal ion and its surrounding ligands. Based on this, the complex is called neutral if the sum of the charges of the constituents is equal to zero. However, for an anion or cationic complex, the sum of the charges of the constituents is equal to the charge on the coordination sphere.#36ModerateDefinitions of Some Important Terms Pertaining to Coordination Compounds
The oxidation number of the central atom in a complex is defined as the charge it would carry if all the ligands are removed along with the electron pairs that are shared with the central atom. Similarly the charge on the complex is the sum of the charges of the constituent parts i.e. the sum of the charges on the central metal ion and its surrounding ligands. Based on this, the complex is called neutral if the sum of the charges of the constituents is equal to zero. However, for an anion or cationic complex, the sum of the charges of the constituents is equal to the charge on the coordination sphere.#37ModerateNomenclature of Coordination Compounds
#38ModerateIsomerism in Coordination Compounds
#39ModerateIsomerism in Coordination Compounds
#40EasyDefinitions of Some Important Terms Pertaining to Coordination Compounds
#41ModerateWerner’s Theory of Coordination Compounds
#42EasyIsomerism in Coordination Compounds
#43ModerateWerner’s Theory of Coordination Compounds
#44EasyIsomerism in Coordination Compounds
#45EasyBonding in Coordination Compounds
#46EasyDefinitions of Some Important Terms Pertaining to Coordination Compounds
#47EasyWerner’s Theory of Coordination Compounds
#48ModerateBonding in Coordination Compounds
#49ModerateBonding in Coordination Compounds
#50ModerateNomenclature of Coordination Compounds
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