Heteroatoms greatly alter the chemical and physical properties of a hydrocarbon.
Heteroatoms :-An element or group of elements that replace one or more hydrogen (H) atoms from hydrocarbon, such that valency of carbon remains satisfied.They have a profound effect on the reactivity of organic molecules. Have only a limited range of reactions, and so although organic chemistry is often defined as the chemistry of carbon.Heteroatoms confer reactivity on a particular molecule because they have lone pairs and create electron-deficient sites on carbon.
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