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Atoms and Nuclei Test - 38
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Atoms and Nuclei Test - 38

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  • Question 1/10
    4 / -1
    The nucler of which of following Pairs of nuclei are isotones
    Solutions

  • Question 2/10
    4 / -1
    when u-238 nucleus originally at lest decay by emitting an α -particle having a speed u the recoil speed of the resi - dual nucleus is.
  • Question 3/10
    4 / -1
    The energy difference between the first two levels of hydrogen atom is 10.2 eV. what is the corresponding energy difference for a singly ionised helium atom?
    Solutions

  • Question 4/10
    4 / -1
    If in nature there may not be an element for which the principal quantum number n > 4, then the total possible number of elements will be
    Solutions

  • Question 5/10
    4 / -1
    In the following atoms and molecules for the transition from n = 2 to n = 1, the spectral line of minimum wavelength will be produced by
    Solutions

  • Question 6/10
    4 / -1
    First Bohr radius of an atom with Z = 82 is R. Radius of its third orbit is
    Solutions

  • Question 7/10
    4 / -1
    The size of an atom is of the order of
    Solutions

  • Question 8/10
    4 / -1
    Which one of the series of hydrogen spectrum is in the visible region?
  • Question 9/10
    4 / -1
    The spectral series of the hydrogen atom that lies in the visible region of the electromagnetic spectrum
  • Question 10/10
    4 / -1
    The kinetic energy of the electron in an orbit of radius r in hydrogen atom is (e = electronic charge)
    Solutions

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