In the cation [CoCl₂(en)2]⁺, the oxidation state of cobalt and its coordination number, respectively, are ________. A) -3 and two B) +2 and six C) +4 and four D) +3 and six E) -4 and six

Question

Quizplus · Accepted Answer

The presence of the cations [CoCl(en)2]+ and [Co(en)2]+ in the complex indicates that the oxidation state of cobalt is either +2 or +3. However, since the complex contains a sulfur atom with a negative charge (S1U1P1-), it makes sense to assume that cobalt has a positive oxidation state to balance the negative charge. Therefore, cobalt is likely in the +3 oxidation state. 
The coordination number of cobalt can be determined by counting the number of ligands bonded to the metal center. In this case, there are six ligands: two ethylenediamine molecules (en) and four anionic sulfur atoms (S1U1B12S1U1B0-). Therefore, the coordination number of cobalt in this complex is six.

In the Cation [CoCl2(en)2]+, the Oxidation State of Cobalt and Its

In the Cation [CoCl₂(en)2]⁺, the Oxidation State of Cobalt and Its