The order of the size of the band gab in 4A group elements has to be listed. Concept introduction: Semiconductors will conduct the electric current more easily. Insulator: Under the influence of electric field, the little electric current will flow in the material is called insulator, whose internal electric charges do not flow freely. Band gap is the difference in energy between the valence band and the conduction band of a solid material.

Question

81. a. Propose a mechanism for the following reaction: OH CH2=CHCHC=N b. What is the product of the following reaction? HO H₂O N=CCH2CH2CH OH HO CH3CCH=CH2 H₂O C=N 82. Unlike a phosphonium ylide that reacts with an aldehyde or a ketone to form an alkene a sulfonium ulia

Answer 1

Question

Chapter 12, Problem 22PS

Interpretation Introduction

Interpretation:

The order of the size of the band gab in 4A group elements has to be listed.

Concept introduction:

Semiconductors will conduct the electric current more easily.

Insulator: Under the influence of electric field, the little electric current will flow in the material is called insulator, whose internal electric charges do not flow freely.

Band gap is the difference in energy between the valence band and the conduction band of a solid material.

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81. a. Propose a mechanism for the following reaction: OH CH2=CHCHC=N b. What is the product of the following reaction? HO H₂O N=CCH2CH2CH OH HO CH3CCH=CH2 H₂O C=N 82. Unlike a phosphonium ylide that reacts with an aldehyde or a ketone to form an alkene a sulfonium ulia

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