Coordination Compounds
Maharashtra Board · Class 12 · Chemistry
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Quick Quiz: Coordination Compounds
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What is the coordination number of the central metal ion in [Co(NH₃)₄Cl₂]⁺?
What is the oxidation state of chromium in [Cr(NH₃)₄Cl₂]⁺?
The IUPAC name of K₄[Fe(CN)₆] is:
Which type of isomerism is shown by [Co(NH₃)₅Cl]SO₄ and [Co(NH₃)₅SO₄]Cl?
Sample Questions
Which of the following are monodentate ligands?
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NH₃, Cl⁻, H₂O
Monodentate ligands have only one donor atom. NH₃ (N donor), Cl⁻ (Cl donor), and H₂O (O donor) are monodentate. En and oxalate are bidentate ligands.
Ethylenediamine (en) is a:
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Bidentate ligand
Ethylenediamine (H₂N-CH₂-CH₂-NH₂) has two nitrogen atoms as donor atoms, making it a bidentate ligand.
According to Crystal Field Theory, in an octahedral complex, d orbitals split into which sets?
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t₂g (3 orbitals) and eg (2 orbitals)
In octahedral complexes, the five d orbitals split into t₂g set (dxy, dyz, dxz - lower energy) and eg set (dx²-y², dz² - higher energy).
Which of the following statements about coordination compounds are correct?
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Ligands are electron pair donors, Central metal ion is a Lewis acid, Counter ions are outside the coordination sphere
Ligands donate electron pairs (Lewis bases) to metal ions (Lewis acids). Counter ions balance charge outside coordination sphere. Coordination bonds are covalent, not ionic.
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