Question

The standard reduction potertal of element A, B, C and D are respectively -2.90, +1.50, -0.74 and +0.34 Among these the strongest oxidising agent. A (i) B (¡¡¡) C (iv) D​

Answer 1

Answer:

The increasing order of reducing power is as follows:

Ag

+

∣Ag<Hg

2+

∣Hg<Cr

3+

∣Cr<Mg

2+

∣Mg<K

+

∣K

Metal with most positive standard electrode potential has the least reducing power.

Metal with most negative standard electrode potential has maximum reducing power.

Answer 2

Answer:

Option 2 is correct that is B.

Explanation:

We know that metal with positive standard electrode potential has the least reducing power.

Metal with the most negative standard electrode potential has maximum reducing power.

Now in this question, standard electrode potential i.e reduction potential of B is minimum (+1.50) i.e its oxidation potential is maximum which implies B is most reactive chemically.

Thus B is the strongest oxidizing agent.