Mention difficulties in settings Standard Hydrogen Electrode

Standard hydrogen electrode (SHE) is a

In case of a standard hydrogen electrode

Standard Electrode Potential||Half Cells||their reactions and representation||Complete Galvanic Cell with reactions and representations||Reference Electrodes||Standard Hydrogen Electrode||Secondary Electrodes Calomel Electrode and Silver Electrode

Different Type OF HC (i) Metal-metal ion HC (ii) Gas-ion HC [Standard Hydrogen Electrode]

The standard hydrogen electrode is written in