Which of the following is true for arenes?

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(B) Arenes are aromatic hydrocarbons characterized by the presence of a cyclic,planar structure with $(4n+2) \pi$-electrons,which leads to the delocal

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Delocalization of $\pi$-electrons

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(B) Arenes are aromatic hydrocarbons characterized by the presence of a cyclic,planar structure with $(4n+2) \pi$-electrons,which leads to the delocalization of $\pi$-electrons. This delocalization provides extra stability to the molecule,known as resonance energy. While resonance and high stability are properties of arenes,the defining characteristic that allows for their unique reactivity (electrophilic substitution rather than addition) is the delocalization of $\pi$-electrons. Therefore,all options are technically properties,but delocalization is the fundamental electronic feature.

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