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Lecture 2: Atomic Models: Thomsons model of atom ; Rutherfords’ model and limitation ; Atomic number and mass number, isotopes and isobars ; Bohr’s model

  • Chapter 2 - Structure of Atom Assignments 1

    Which quantum number determines
    (i) energy of electron (ii) Orientation of orbitals.

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  • Chapter 2 - Structure of Atom Assignments 2

    Why is energy of 1s electron lower than 2s electron?

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  • Chapter 2 - Structure of Atom Assignments 3

    Which orbital is non – directional?

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  • Chapter 2 - Structure of Atom Assignments 4

    How would the velocity be effected if the position is known?

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  • Chapter 2 - Structure of Atom Assignments 5

    What did Einstein explain about photoelectric effect?

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  • Chapter 2 - Structure of Atom Assignments 6

    Define photoelectric effect.

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  • Chapter 2 - Structure of Atom Assignments 7

    Give the range of wavelength of the visible spectrum.

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  • Chapter 2 - Structure of Atom Assignments 8

    Why Rutherford’s model could not explain the stability of an atom?

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  • Chapter 2 - Structure of Atom Assignments 9

    Give the drawbacks of J.J. Thomson’s experiment.

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  • Chapter 2 - Structure of Atom Assignments 10

    Give the main features of Thomson’s Model for an atom.

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  • Chapter 2 - Structure of Atom Assignments 11

    What is an atomic number?

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  • Chapter 2 - Structure of Atom Assignments 12

    What are isotones?

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  • Chapter 2 - Structure of Atom Assignments 13

    What are isobars?

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  • Chapter 2 - Structure of Atom Assignments 14

    What is an isotope? [

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  • Chapter 2 - Structure of Atom Assignments 15

    Name the scientist who first gave the atomic model.

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  • Chapter 2 - Structure of Atom Assignments 16

    If the velocity of the electron in Bohr's first orbit is 2.19 x 106ms-1, calculate the de Broglie wavelength associated with it.

     

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  • Chapter 2 - Structure of Atom Assignments 17

    In Rutherford's experiment, generally the thin foil of heavy atoms, like gold, platinum etc. have been used to be bombarded by the α-particles. If the thin foil of light atoms like aluminium etc. is used, what difference would be observed from the above results?

     

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    • Description:-

    Lecture 2:
    Today, we will discuss the next four topics of this chapter, i.e; Atomic Models: Thomsons model of atom ; Rutherfords’ model and limitation ; Atomic number and mass number, isotopes and isobars ; Bohr’s model from Chapter 2 - Structure of Atom
    OBJECTIVES:
    1:  Find out your doubts on these topics  Atomic Models: Thomsons model of atom ; Rutherfords’ model and limitation ; Atomic number and mass number, isotopes and isobars ; Bohr’s model
    2: Try to solve the numerical problem on these topics i.e; Atomic Models: Thomsons model of atom ; Rutherfords’ model and limitation ; Atomic number and mass number, isotopes and isobars ; Bohr’s model
    Important Tip:
     This lecture about Structure of Atom 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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