How many protons are pumped through each of the electron transport chain complexes?
complex i =
complex ii =
complex iii =
complex iv =

Complex I =   4 proton

Complex II =  0 proton

Complex III = 4 proton

Complex IV =2 proton

Explanation:

In the process of conversion of to to total three complexes are involved that are the integral proteins of the inner mitochondrial membrane and are involved in interacting with the electron thereby releasing proton.

Complex I =  Total four protons across the membranes

Complex II =  It do not have sufficient energy to pump out proton.

Complex III = Total four protons across the membranes

Complex IV = Total two protons across the membranes

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