Which of the following statements is true regarding pyridine?Select answer from the options belowAll of the lone pairs of electrons in pyridine participate in resonance delocalization.Pyridine has a five-membered ring.Pyridine can function as a base.Pyridine is antiaromatic.
Question
Which of the following statements is true regarding pyridine?Select answer from the options belowAll of the lone pairs of electrons in pyridine participate in resonance delocalization.Pyridine has a five-membered ring.Pyridine can function as a base.Pyridine is antiaromatic.
Solution
The true statement regarding pyridine is: "Pyridine can function as a base."
Here's why:
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Pyridine does not have all of its lone pairs of electrons participating in resonance delocalization. The nitrogen atom in pyridine has a lone pair of electrons, but these electrons do not participate in the aromatic π system, they are in an sp2 hybridized orbital and are localized to the nitrogen atom.
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Pyridine does not have a five-membered ring. Pyridine is a six-membered ring compound. It consists of five carbon atoms and one nitrogen atom.
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Pyridine can indeed function as a base. It is a weak base due to the lone pair of electrons on the nitrogen atom that can accept a proton.
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Pyridine is not antiaromatic. It is aromatic. Aromatic compounds are cyclic, planar, and follow the 4n+2 rule (Hückel's rule) for π electrons. Pyridine meets all these criteria.
Similar Questions
Which of the following statements are true regarding pyrimidine?Select answer from the options belowPyrimidine has a five-membered ring.Pyrimidine has a six-membered ring with only one nitrogen atom.Pyrimidine has nitrogen atoms at positions 1 and 3 of the ring.The lone pairs of electrons in pyrimidine all participate in resonance delocalization.
Pyrimidines have how many rings, containing how many carbons and nitrogens in each ring?Group of answer choicesone ring of six and one of fivetwo rings of sixone ring of sixtwo rings of five
Correct statement(s) about Pyrrole and pyridine.Pyrrole is more basic than PyridinePyridine are more basic than PyrroleOnly Pyridine are Aromatic in naturePyrrole and Pyridine both are Aromatic in nature
Which of the following statement is not correct ?A Resonating structures do not show atomic delocalisation. B Resonance effect is permanent effect. C Resonance energy is difference in energy between real structure and most stable hypothetical canonical form. D Resonating structures have always same energy.
The number of σσσσσσσσσσ bonds, π bonds and lone pair of electrons in pyridine, respectively are:
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