Chemistry - Coordination Chemistry Question with Solution | TestHub
ChemistryCoordination ChemistryVBT,CFT(complex compound)Hard2 minQB
ChemistryHardsingle choice
Match each complex in List-I with the description in List-II. List-II descriptions combine bonding type with the number of stereoisomers of the complex. From the pairs below, choose the CORRECT pair whose complex has the maximum number of unpaired electrons.
List-I | List-II |
|---|---|
[P] [Co(en)₃]Cl₃ | [1] inner-orbital, low spin, 2 stereoisomers |
[Q] [Cr(en)₂Cl₂]Cl | [2] inner-orbital, 3 unpaired electrons, 3 stereoisomers |
[R] K₃[FeF₆] | [3] outer-orbital, high spin, 1 isomer |
[S] [Pt(NH₃)(py)ClBr] | [4] square planar, dsp², 3 isomers |
Options:
Answer:
C
Solution:
P–1, Q–2 and R–3 are correct pairs; Q–3 is incorrect, so D is rejected even though Cr³⁺ has 3 unpaired electrons. Unpaired electrons: Co³⁺ low spin 0, Cr³⁺ 3, Fe³⁺ high spin 5. The correct pair with the maximum is R–3.
Stream:JEESubject:ChemistryTopic:Coordination ChemistrySubtopic:VBT,CFT(complex compound)
⏱ 2mℹ️ Source: QB
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