Which of the following ions of the nine-membered ring is aromatic ? (assume planar rings) (a) cyclononatetraenyl cation (b) cyclononatetraenide anion

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ChemistryGOCAromaticityEasy2 minQB

ChemistryEasysingle choice

Which of the following ions of the nine-membered ring is aromatic ? (assume planar rings)

(a) structure cyclononatetraenyl cation

(b) structure cyclononatetraenide anion

Answer:

Solution:

The cation has 8 π electrons (4n, anti-aromatic if planar). The anion has 10 π electrons (4n+2, n = 2) and is aromatic. Only (b).

Stream:JEESubject:ChemistryTopic:GOCSubtopic:Aromaticity

⏱ 2mℹ️ Source: QB

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