What are ionic or electrovalent compounds? Give an example of ionic compound. Explain with reason four properties of these compounds.
Ionic compounds are those compounds which are formed by the transfer of electrons from a metal to a non-metal. For example, NaCl.
- Physical nature: Ionic compounds are hard and solid due to strong force of attraction between oppositely charged ions.
- Melting point and boiling point: As more amount of energy is required to break strong bonds. So, they have high melting point and boiling point.
- Solubility: These are soluble in water (polar solvent) but insoluble in organic solvent.
- Conduction of electricity: They conduct electricity in solution or molten state as ions move towards opposite electrodes.