Question

The oxidation number and coordination number of $M$ in the compound, $\left[M\right(S{O}_4\left)\right(N{H}_3{)}_5]$ will be:

• A. 10 and 3
• B. 1 and 6
• C. 6 and 4
• D. 2 and 6

Answer 1

The correct option is D 2 and 6

Since $M$ has 6 ligands attached to it, the co-ordination no. of the compound is 6. Here, the anionic species inside the co-ordination sphere is $(S{O}_4{)}^{2-}$. Since the compound as a whole is neutral, the oxidation no. of $M$ should be 2.

Hence, the correct option is $D$