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Match List-I with List-II. List-I (Coordination entity) A. [CoCl(NH3)5]2+ B. [Co(NH3)6]3+ C. [Co(CN)6]3- D. [Cu(H2O)4]2+ List-II (Wavelength of light absorbed in nm) I. 310 II. 475 III. 535 IV. 600 Choose the correct answer from the options given below.

1. A-II, B-I, C-III, D-IV
2. A-IV, B-I, C-III, D-II
3. A-II, B-III, C-IV, D-I
4. A-III, B-II, C-I, D-IV

Correct answer: A-III, B-II, C-I, D-IV

Solution

The correct matches are based on the specific electronic transitions and the ligand field strength of the coordination entities, which determine the wavelengths of light they absorb. Each complex has a characteristic absorption spectrum influenced by its metal ion and ligands, leading to the correct pairings.

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