1.

Generally the ionic compounds have high melting points.

Answer» (i) Ionic componds are formed when an atom of a combining metal element transfer its electrons to the atom of another non-metallic element.
(ii) During this process, the atom of the combining metal after losing electrons, forms a positively charged after losing electrons, and the atom of the combining non-metal after gaining electrons forms a negatively charged ion called as anion.
(iii) Thus ionic bonds are formed between the cations and anions during compound formation .
(iv) Due to the presence of cation and anions, there is a strong electrostatic attraction between the molecules.
(v) Hence to break these inter-molecular bonds a lot of energy is needed.
(vi) Hence ionic compounds have high melting points.


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