A) chloropentammine cobalt (II) chloride
B) pentammine chloro cobalt (III) chloride
C) chloropentammine cobalt (III)
D) pentammine cobalt (III) chloride
Correct Answer: B
Solution :
\[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\] In this case the ligands are chloro and amine. The complex is cation and chloride is anion. The oxidation state of cobalt is III as \[x+5\,(0)-1-2=0\] \[x=+3\] Its name is pentammine chloro cobalt (III) chloride.
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