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Lecture 3 : Polarity of bonds ; VSEPR theory ; Shapes of simple molecules according to VSEPR theory ; Valence bond theory

  • Chapter 4 - Chemical Bonding and Molecular Structure Assignments 1

    S – orbital does not show any preference for direction. Why? 

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  • Chapter 4 - Chemical Bonding and Molecular Structure Assignments 2

    How would you attribute the structure of PH3 molecule using VSEPR model? 

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  • Chapter 4 - Chemical Bonding and Molecular Structure Assignments 3

    CO2 is linear whereas SO2 is bend – shaped. Give reason

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  • Chapter 4 - Chemical Bonding and Molecular Structure Assignments 4

    Give the main features of VSEPR Theory

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  • Chapter 4 - Chemical Bonding and Molecular Structure Assignments 5

    Use molecular orbital theory to explain why the Be2molecule does not exist.

     

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  • Chapter 4 - Chemical Bonding and Molecular Structure Assignments 6

    Explain the formation of H2molecule on the basis of valence bond theory.

     

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  • Chapter 4 - Chemical Bonding and Molecular Structure Assignments 7

    What do you understand by bond pairs and lone pairs of electrons? Illustrate by giving one example of each type.

     

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  • Chapter 4 - Chemical Bonding and Molecular Structure Assignments 8

    Apart from tetrahedral geometry, another possible geometry for CH4is square planar with the four H atoms at the corners of the square and the C atom at its centre. Explain why CH4is not square planar?

     

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  • Chapter 4 - Chemical Bonding and Molecular Structure Assignments 9

    Although geometries of NH3and H2O molecules are distorted tetrahedral, bond angle in water is less than that of ammonia. Discuss.

     

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  • Chapter 4 - Chemical Bonding and Molecular Structure Assignments 10

    Discuss the shape of the following molecules using the VSEPR model:

    BeCl2, BCl3, SiCl4, AsF5, H2S, PH3

     

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    • Description:-

    Lecture 3 :
    Today, we will discuss the another  four topics of this chapter, i.e; Polarity of bonds ; VSEPR theory ; Shapes of simple molecules according to VSEPR theory ; 
    Valence bond theory from Chapter 4 - Chemical Bonding and Molecular Structure
    OBJECTIVES:
    1:  Learn about different bond term  Polarity of bonds ; VSEPR theory ; Shapes of simple molecules according to VSEPR theory ; Valence bond theory
    Important Tip:
     This lecture about Chapter 4 - Chemical Bonding and Molecular Structure is base for the further chapters. These topics help in many ways as to understand the and how we can use them. It help you in further studies also.
    Please go through the topic, their notes. Properly do the assignments, watch videos of the concerned topics. If you any doubt about any topic/point please submit it in the discussion section... it will be answered as soon as possible.
    After all of this... when you fell confident about the particular topic/chapter then take the quiz.

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