10 Questions
Which of the following is an unsaturated heterocycle with one heteroatom?
Pyrrole
What is the reason for the aromatic nature of pyrrole, furan, and thiophene?
The molecule is planar and has overlapping of the lone pair with the p-orbital of the carbon atoms
What effect does the heteroatom have on the aromaticity of pyrrole, furan, and thiophene?
Electron-donating effect
What is the order of aromaticity among benzene, thiophene, pyrrole, and furan?
Benzene › thiophene › pyrrole › furan
What factor determines the degree of aromaticity in pyrrole, furan, and thiophene?
The readiness of the heteroatom to give its unshared pair of electrons to the carbon atoms
Are pyrrole, furan, and thiophene common five-membered unsaturated heterocycles with one heteroatom?
True
The molecule of pyrrole, furan, and thiophene is planar and has all atoms in SP2 hybridization?
True
The overlapping of the lone pair with the p-orbital of the carbon atoms completes the total π-electrons to be 6 electrons in pyrrole, furan, and thiophene?
True
The order of aromaticity is benzene › thiophene › pyrrole › furan?
True
The degree of aromaticity in pyrrole, furan, and thiophene is dependent on the readiness of the heteroatom to give its unshared pair of electrons to the carbon atoms of the ring, which depends on the electronegativity of the heteroatoms?
True
Test your knowledge of five-membered ring heterocycles with this quiz focusing on pyrrole, furan, and thiophene. Explore their structures, aromaticity, and applications in natural compounds, synthetic drugs, and biological molecules.
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