In the coordination compound [Co(en)₂Cl₂]Cl, the coordination number and oxidation number of the central atom are ________ and ________, respectively. A) 4; +3 B) 6; +2 C) 4; +2 D) 6; +3 E) 4; +1

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The coordination number is 6 because ethylenediamine (en) acts as a bidentate ligand, providing 2 coordination sites, and there are 2 chloride ions and 2 unidentate ligands (from the notation ₂, which seems to describe the ligands' coordination without specifying them, but implies 2 more sites), totaling 6 coordination sites. The oxidation number of Co is +3, calculated by assuming the ligands are neutral (as is typical for en) and the chloride ion in the coordination sphere contributes -1, with the extra chloride outside the coordination sphere indicating a +1 charge on the complex, leading to a +3 oxidation state for Co to balance the charges.

In the Coordination Compound [Co(en)2Cl2]Cl, the Coordination Number and Oxidation

In the Coordination Compound [Co(en)₂Cl₂]Cl, the Coordination Number and Oxidation