Consider the Reaction Frumkin Isotherm Is Used to Describe the Adsorption

Consider the reaction
$$\begin{array} { l } M \stackrel { k _ { 1 } } { \longrightarrow } M _ { a ds} ^ { + } + e ^ { - } \\M _ { a ds } ^ { + } \stackrel { k _ { 2 } } { \longrightarrow } M _ { s o l } ^ { + }\end{array}$$ . Frumkin isotherm is used to describe the adsorption. The kinetic parameter values are k₁₀ = 10^-9 mol cm^-2 s^-1, b₁ = 10 V^-1, g = 15, $\beta$ ₁ = -0.5 , k₂₀ = 10^-8 mol cm^-2 s^-1, $\beta$ ₂ = +0.5 and $\varGamma$ = 10^-8 mol cm^-2.
-In the above question, the total number of electrical elements required to model the reaction (i.e., only the Faradaic part, without considering the double-layer capacitor or solution resistance) is ____

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