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).
Solid NaCl is a ............. conductor of electricity.

Explanation

To fill in the blank in the statement "Solid NaCl is a ............. conductor of electricity," we can follow these steps:

### Step 1: Understand the nature of solid NaCl
- Solid NaCl consists of sodium (Na) and chloride (Cl) ions held together by strong ionic bonds. In the solid state, these ions are fixed in place within a crystalline lattice structure.

### Step 2: Identify the conductivity in solid state
- For a substance to conduct electricity, it must have free-moving charged particles (ions or electrons). In solid NaCl, the ions are not free to move because they are locked in the lattice structure.

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