Determine if the following molecules are aromatic, antiaromatic, or nonaromatic based on Hückel's rules, assume planarity. A D B E tropylium + fz1 F The tropylium ion is aromatic. Ion X, however, is not aromatic. Explain in 1-3 sentences. H₂ N + X

Q: OH Ph

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A: H2SO3 = Sulphurous Acid H3PO4 = Phosphoric Acid H2CrO4 = Chromic Acid

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A:

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A: 1. General formula of this structure should be M(A4B2)2- and ion is anion.

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A:

Q: Briefly explain the term ‘chemoselectivity’

A: Briefly introduction of chemoselectivity is given below.

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A:

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Q: ΝΗ NH₂

A: We have to carry out the given synthesis.

Analyzing and Predicting Spectroscopic Data

The interaction of electromagnetic radiation with the structure of molecules in the sample and their study is referred spectroscopy. Several spectroscopic methods are used to acquire sample information, and these methods are proved to be accurate, fast, and non-destructive. The information obtained about the content and composition of molecules from these spectroscopic methods is called spectroscopic data.