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Structure of At...

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  • Question 1
    4 / -1

    The uncertainty in the momentum of an electron is 1.0 × 10-5 kg ms-1. The uncertainty in its position will be

  • Question 2
    4 / -1

    Which of the following sets of quantum numbers is correct ?

  • Question 3
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    Rutherford’s experiment on scattering of particles showed for the first time that the atom has

  • Question 4
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    The principal quantum number of an atom is related to the

  • Question 5
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    Transition of an electron from n = 3 to n = 1 level results in

  • Question 6
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    When alpha particles are sent through a thin metal foil, most of them go straight through the foil because

  • Question 7
    4 / -1

    The increasing order for the values of e/m (charge/mass) is

  • Question 8
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    The number of unpaired electrons in a chromic ion, Cr3+ (atomic number 24) is

  • Question 9
    4 / -1

    Which one of the following is the smallest in size?

  • Question 10
    4 / -1

    A p – orbital can accommodate

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