Question

An organic compound ‘X’ - (molecular formula C₆H₇O₂N) has six atoms in a ring system, two double bonds and a nitro group as substituent; ‘X’ is:
(a) heterocyclic
(b) homocyclic and aromatic
(c) aromatic but not homocyclic
(d) homocyclic but not aromatic

Answer 1

C) Aromatic but not homocyclic

Answer 2

Answer:

Benzene is the archetypical aromatic compound. It is planar, bond angles=120º, all carbon atoms in the ring are sp2 hybridized, and the pi-orbitals are occupied by 6 electrons. The aromatic heterocycle pyridine is similar to benzene, and is often used as a weak base for scavenging protons. Furan and pyrrole have heterocyclic five-membered rings, in which the heteroatom has at least one pair of non-bonding valence shell electrons. By hybridizing this heteroatom to a