2-pyridone is a derivative of 2-hydroxypryridine which is aromatic . Whether 2-pyridone has a comparable aromatic character or not has to be explained. Concept Introduction: Aromatic character: The delocalization of π-electrons of conjugated π-bonds in a cyclic and planar compounds is known as the aromatic character of the compound. The delocalization also occurs between the negative charge and the π-electrons in case if the compound is a negatively charged species.

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ii) Molecular ion peak :the peak corresponding to the intact molecule (with a positive charge) What would the base peak and Molecular ion peaks when isobutane is subjected to Mass spectrometry? Draw the structures and write the molecular weights of the fragments. Circle most stable cation a) tert-butyl cation b) Isopropyl cation c) Ethyl cation. d) Methyl cation 6. What does a loss of 15 represent in Mass spectrum? a fragment of the molecule with a mass of 15 atomic mass units has been lost during the ionization Process 7. Write the isotopes and their % abundance of isotopes of i) Cl

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Chapter 21, Problem 21.40P

Interpretation Introduction

Interpretation: 2-pyridone is a derivative of 2-hydroxypryridine which is aromatic. Whether 2-pyridone has a comparable aromatic character or not has to be explained.

Concept Introduction:

Aromatic character:

The delocalization of π-electrons of conjugated π-bonds in a cyclic and planar compounds is known as the aromatic character of the compound. The delocalization also occurs between the negative charge and the π-electrons in case if the compound is a negatively charged species.

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