The standard Electrode Potentials at 298 K of the Metal ion / metal are as shown:
| Mn+/M | Wn+/W | Xn+/X | Yn+/Y | Zn+/Z |
| E0V | +1.81 | -2.93 | -1.66 | +0.8 |
Identify the correct decreasing order of their reducing power.
1
X > Y > Z > W
2
Z > W > Y > X
3
W > Z > Y > X
4
W > Z > X > Y