Chapter 3, Problem 50A

Interpretation Introduction

Interpretation :

Electricity conduct by the ionic compound needs to be explained.

Concept Introduction :

Ionic compounds-Compounds that consist of the ionic form of elements are known as ionic compounds. Atoms that gain or lose electrons are converted into ions. Ions may carry a negative charge when the gain of electrons takes place and a positive charge when the loss of electrons takes place.

Answer to Problem 50A

In the molten state of an ionic compound, ions change their position and move toward the cathode or anode point, hence they conduct electricity.

But in solid compounds, the position of atoms cannot be changed or they are unable to move so they are unable to conduct electric current.

Explanation of Solution

The ionic compounds are formed by the loss or gain of the electrons by atoms. In ionic compounds, atoms are bonded with an ionic bond. The ions present in crystal form are tightly fixed. The fixed arrangement of ions can be disturbed at high temperatures, where the ionic bonds can also be broken and compound gets melted. In molten state, the charged ions are free to move and conduct electricity.

Conclusion

The properties of the ionic compounds are they are good conductor of electricity, they have higher melting and boiling point and they have crystal structures. On melting, the ions are free to move and conduct electricity.