The standard reduction potentials of \(\mathrm{Cu}^{2+} \mid \mathrm{Cu} \text { and } \mathrm{Cu}^{2+} \mid \mathrm{Cu}^{+}\) are 0.337 V and 0.153V respectively. The standard electrode potential of Cu+|Cu half cell is:
1. 0.184 V
2. 0.827 V
3. 0.521 V
4. 0.490 V