- In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.
Assertion : All Cyclic compounds are aromatic compounds.
Reason : Benzene is an example of an aromatic compound.
Answers
Hence, option A is correct.
Explanation:
Aromatic Compounds: Aromatic compounds are those chemical compounds which contain conjugated planar ring systems along with delocalized pi electron clouds. For example, benzene and toluene are aromatic compounds.
-For determining the Aromatic nature of compounds, the Huckel Rule is used. Huckel proposed a theory to help determine if a planar ring molecule would have aromatic properties or not.
-This rule states that if a cyclic, planar molecule has (4n+2π)electrons, it is considered AROMATIC.
Four Conditions for AROMATICITY
1.The molecule is cyclic (a ring of atoms)
2.The molecule is planar (all atoms in the molecule lie in the same plane)
3.The molecule is fully conjugated (p orbitals at every atom in the ring)
4.The molecule has (4n+2π)electrons (n=0or any positive integer)