Coordination Compounds — Important Questions
Telangana Open School (TOSS) · Class 12 · Chemistry
45 important questions from Coordination Compounds for Telangana Open School (TOSS) Class 12 Chemistry, with answers. Written for the board exams 2027.
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Important Questions from Coordination Compounds
Which of the following is a monodentate ligand?
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H₂O
H₂O has only one donor atom (oxygen), so it is monodentate. Ethylenediamine is bidentate, oxalate is bidentate, EDTA is hexadentate.
What is the IUPAC name of [Co(NH₃)₆]Cl₃?
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Hexaamminecobalt(III) chloride
The complex cation is named first, ligands in alphabetical order (ammine), number of ligands (hexa), metal (cobalt), oxidation state (III), anion (chloride).
Which of the following is a chelating ligand?
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Ethylenediamine
Ethylenediamine has two donor nitrogen atoms and can form a ring with the metal, making it chelating.
What is the donor atom in NH₃ ligand?
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Nitrogen
Nitrogen has a lone pair and donates it to the metal, so it is the donor atom.
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