Total number of aromatic compounds among the | vedclass

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(A) To determine the aromaticity of the given compounds,we check for $H$ückel's rule ($4n+2$ $\pi$ electrons),planarity,and cyclic conjugation:$1$. $1

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$2$

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(A) To determine the aromaticity of the given compounds,we check for $H$ückel's rule ($4n+2$ $\pi$ electrons),planarity,and cyclic conjugation:$1$. $1,4$-dihydronaphthalene: Non-aromatic (not fully conjugated).$2$. Fulvalene: Non-aromatic (not fully conjugated).$3$. Cyclopentadienyl cation: Aromatic ($2$ $\pi$ electrons,$n=0$,planar,cyclic,conjugated).$4$. Cyclooctatetraene: Non-aromatic (tub-shaped,non-planar,$8$ $\pi$ electrons).$5$. Pyridine: Aromatic ($6$ $\pi$ electrons,$n=1$,planar,cyclic,conjugated).$6$. Cycloheptatriene: Non-aromatic ($sp^3$ carbon present).Thus,there are $2$ aromatic compounds (Cyclopentadienyl cation and Pyridine).

Total number of aromatic compounds among the following compounds is:

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