What is the standard electrode (half-cell) potential? Give its uses.

(N/A) Standard electrode (half-cell) potential: Under standard conditions,which include a temperature of $298 \ K$,a gas pressure of $1 \ bar$,and a solution concentration of $1 \ M$,the reduction potential of an electrode (half-cell) is defined as the standard electrode potential,measured in volts $(V)$.
Uses:
$(i)$ Construction of the electrochemical series ($EMF$ series): When half-cell reactions are arranged in decreasing order of their standard reduction potential,the resulting series is known as the electrochemical series. This series helps in predicting the spontaneity of redox reactions and the relative strength of oxidizing and reducing agents.