Define the term 'anode mud'. Name the electrode made of pure metal.

 Describe ionic compounds on the basis of the following property:

The strong force of attraction between positive and negative ions.

Describe ionic compounds on the basis of the following property:

Solubility of compounds in water.

Describe ionic compounds on the basis of the following property.

Electrical conductivity.

Show the formation of $\mathrm{NaCl}$ from sodium and chlorine atoms by transfer of an electron (s).