Question

The standard hydrogen electrode has zero electrode potential because

• A. Hydrogen is the easiest to oxidize
• B. This electrode potential is assumed to be zero
• C. Hydrogen atom has only one electron
• D. Hydrogen is the lightest element

Answer 1

The correct option is B

This electrode potential is assumed to be zero

The absolute value of electrode potential cannot be determined. So the electrical potential of hydrogen electrode is taken as a standard reference, ie zero, and the electric potential of all the other electrodes is measured respective to it.