Resonance hybrid of CH 3 NO 2 is to be drawn. Concept introduction: For a species, each valid Lewis structure is called a ‘resonance structure’ or a ‘resonance contributor’. A resonance hybrid is a weighted average of all resonance contributors. A partial bond is represented in a resonance hybrid by a dashed line connecting the two atoms. In the resonance hybrid, partial bonds are shown which represent the atoms over which the electrons are being delocalized.

Question

1.35. Arrange the single covalent bonds within each set in order of increasing polarity. (а) С-Н, О—н, N— H (b) С—Н, В —Н, О —Н (с) С-Н, С —СІ, С —І (d) С S, C —О, С —N (е) С—Li, C —В, С -Mg

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Question

Chapter 1, Problem 1.54P

Interpretation Introduction

Interpretation:

Resonance hybrid of CH3NO2 is to be drawn.

Concept introduction:

For a species, each valid Lewis structure is called a ‘resonance structure’ or a ‘resonance contributor’. A resonance hybrid is a weighted average of all resonance contributors. A partial bond is represented in a resonance hybrid by a dashed line connecting the two atoms. In the resonance hybrid, partial bonds are shown which represent the atoms over which the electrons are being delocalized.

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1.35. Arrange the single covalent bonds within each set in order of increasing polarity. (а) С-Н, О—н, N— H (b) С—Н, В —Н, О —Н (с) С-Н, С —СІ, С —І (d) С S, C —О, С —N (е) С—Li, C —В, С -Mg

A 1.88/The curved arrow notation introduced in Section 1.6B is a powerful method used by organic chemists to show the movement of electrons not only in resonance structures, but also in chemical reactions. Because each curved arrow shows the movement of two electrons, following the curved arrows illustrates what bonds are broken and formed in a reaction. Consider the following three-step process. (a) Add curved arrows in Step [1] to show the movement of electrons. (b) Use the curved arrows drawn in Step [2] to identify the structure of X. X is converted in Step [3] to phenol and HCI. H [1] + H-i: + :ÖH HO [2] + H-i: [3] phenol

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