Standard electrode potential of three metal `X, Y` and `Z` are `-1.2 V, +0.5 V` and `-3.0 V` respectively. The reducing power of these metals will be:

Options

A. `X gt Y gt Z`
B. `Y gt Z gt X`
C. `YgtXgtZ`
D. `ZgtXgtY`

Answer

D

Explanation

Higher the reduction potential, more easily it is reduced and hence higher is its oxidizing power or less is its reducing power. As `E_(red)^(@)` are in the order YgtXgtZ, their reducing power will be in the order ZgtXgtY.