1.

What are covalent compounds ? Why are they different from ionic compounds ? List their three characteristic properties.

Answer»

Solution :Covalent compounds are the compounds that contain covalent bonds in the molecule. A covalent bond is formed by sharing of electrons between the atoms. While a covalent compound contains covalent bonds, the ionic compound is made up of ionic bond which is formed by transference of electrons from one atom to the other. Characteristics of covalent compounds :
(i) These compounds show LOW melting points and boiling points because the INTERMOLECULAR forces are WEAK.
(ii) Such compounds are poor conductors of electricity.
(iii) Generally insoluble or less soluble in water but soluble in ORGANIC SOLVENTS.


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