Which of the following complexes has a coordination number of 6? A)[Co(NH₃)₂Cl₂] B)[Co(NH₃)₄]²⁺ C)[Co(en)₃]³⁺ D)[Co(NH₃)₂]³⁺ E)None of these complexes has coordination number 6.

Question

Quizplus · Accepted Answer

The complex [Co(en)₃]³⁺ has a coordination number of 6 because the ethylenediamine ligand has two nitrogen atoms that can coordinate to the cobalt center, along with four additional ligands (either bound directly to Co or via the nitrogen atoms of ethylenediamine), to give a total of six ligands. All other options have coordination numbers either less than or greater than 6.

Which of the Following Complexes Has a Coordination Number of 6