Fill in the blanks by choosing the appropriate word/words from those given in the brackets:
(ionic conduction, electronic conduction, anode, cathode, one coulomb, one faraday of their equivalent weights, of their molecular weights, decoration, Avogadro's number, proton number, loss of electrons, gain of electrons, can, cannot, e.m.f., negative, positive, greater, `H_(2)`, sodium, less, more, bad, good, increases, decreases electrode potential, negative, positive, greater, less, `H_(2), O_(2)`, more).
The difference of the reduction potential of cathode and anode in a galvanic cell is known as.........

Explanation

To fill in the blank in the statement "The difference of the reduction potential of cathode and anode in a galvanic cell is known as.........", we need to identify the correct term that represents this difference.

### Step-by-Step Solution:

1. **Understanding the Components**: In a galvanic cell, there are two electrodes: the anode and the cathode. The anode is where oxidation occurs, and the cathode is where reduction occurs.

2. **Reduction Potentials**: Each electrode has a reduction potential associated with it. The reduction potential at the anode is denoted as \( E^\circ_{\text{anode}} \) and at the cathode as \( E^\circ_{\text{cathode}} \).

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