Question

An ionic bond is an extreme case of polar covalent bond. Justify.

Answer 1

according to pauling, if the difference in the electronegativity between the two atoms forming a bond is 1-9 then the bond has equal covalent and ionic character. how is it is the difference become more than 1-9 the ionic character increases while the polar covalent character decreases.for example the bond between Sodium and fluorine is completely ionic because the electronegativity difference between sodium(0,9) and fluorine (4,0) atoms 3,1.on the other hand the bond between carbon and chlorine is mainly covalent with very little ionic character because the electronegativity difference in carbon (2,0) and chlorine (3,0) atoms is (0,5).

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