In Faraday's law of Electrolysis, what does "Z" represents in the formula m =Zit?

Electrochemical equivalent

Faraday's first law of electrolysis states that the mass of substance deposited or liberated at any electrode is directly proportional to the charge passed.

m α q

m = Zq

m = Zit

where Z is electrochemical equivalent ; Z = \(\frac{\text{Atomic weight}}{nF}\)