Same chapter3 marksDifficulty: Medium
What is crystal field splitting, and why is [Co(NH3)6]3+ diamagnetic?
Coordination Compounds
3 marksDifficulty: Medium
Define a ligand, the coordination number and the oxidation state of the central atom, using [Cu(NH3)4]SO4 as the example.
Original Khojo Papers practice question — not from a past board paper.
Answer
A ligand is an ion or molecule that donates a lone pair to the central metal atom; here ammonia is the ligand. The coordination number is the number of donor atoms bonded to the metal, which is 4. The oxidation state of copper is +2, since the four ammonia molecules are neutral and the sulphate carries a charge of −2.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The name of the compound is tetraamminecopper(II) sulphate.
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Coordination Compounds
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Solutions