Question

In Tollen's reagent, the oxidation number, co-ordination number and effective atomic number of central metal ion are respectively:

• A. $1,2,50$
• B. $2,2,50$
• C. $2,1,50$
• D. $1,1,50$

Answer 1

The correct option is A $1,2,50$

Tollen's reagent is ammoniacal silver nitrate solution, $\left[Ag\right(N{H}_3{)}_2{]}^{+}$.

As $N{H}_3$ is neutral ligand and charge on coordination sphere is +1. Hence the oxidation number is +1 and the coordination number is 2.
EAN number $=Z-X+Y=47-1+4=50$