1.

What are ionic or electrovalent compounds? Give an example of ionic compound . Explain with reason four properties of these compounds.

Answer»

Solution :Ionic compounds are those compounds which are formed by the TRANSFER of electrons from a metal to a non metal For example `NaCl.`
PROPERTIES:
(i) Physical nature: Ionic compounds are hard and solid due to strong force of attraction between oppositely charged ions.
(ii) Melting point and boiling point: As more amount of energy is required to break strong bonds. So they arehigh melting point and boiling point
(iii) Solubility: These are soluble in WATER (polar SOLVENT) but insoluble in ORGANIC solvent.
(iv) Conduction of electricity: They conduct electricity in solution or molten state as ions move towards opposite electrodes.


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