How does ionic bonding affect conductivity?

Oct 20, 2016

Depending on what form is the ionic substance in.

Explanation:

Ionic substances are made up of positively charged cations and negatively charged anions, held in a 3D lattice by strong electrostatic forces of attraction between the ions.

For example, let's look at NaCl (sodium chloride).
Sodium Chloride is made up of positively charged $N {a}^{+}$ cations and negatively charged $C {l}^{-}$ anions, held in a 3D lattice by strong electrostatic forces of attraction between the ions.

NaCl (sodium chloride) cannot conduct electricity in a solid form because the charged particles are present BUT held in a FIXED POSITION in the 3D lattice, so they are NOT free to move. Therefore, NaCl cannot conduct electricity in a solid form.

However, NaCl (sodium chloride) can conduct electricity in a liquid and molten form because the charged particles are free to move within the lattice, so NaCl can conduct electricity in a liquid and molten form.

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This is how we have to answer it for NCEA Level 2 Chemistry.