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Atoms and Nucle...

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  • Question 1
    4 / -1

    Hydrogen atom from excited state comes to the ground state by emitting a photon of wavelength λ . If R is the Rydberg constant, the principal quantum number n of the excited state is

  • Question 2
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    In the Bohr's model of the hydrogen atom, the lowest orbit corresponds to

  • Question 3
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    In a hydrogen atom, the electron moves around the nucleus in a circular orbit of radius 5 ×10-11 m. Its time period is 1.5 × 10-16 s. The current associated with the electron motion (charge of electron is 1.6 × 10-19 C)

  • Question 4
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    If the radii of nuclei of 13Al27 and 30Zn64 and R1 and R2 respectively, then R1/R2 is equal to

  • Question 5
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    What is the difference of angular momenta of an electron in two consecutive orbits in hydrogen atom?

  • Question 6
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  • Question 7
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    The ratio of minimum wave lengths of Lyman and Balmer series will be

  • Question 8
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    The ionisation potential of hydrogen atom is 13.6 eV. The energy required to remove an electron from the second orbit of hydrogen will be

  • Question 9
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    The angular momentum (L) of an electron moving in a stable orbit around nucleus is

  • Question 10
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    If λ1 and λ2 are the wave lengths of the first members of the Lyman and Paschen series respectively, then λ1 : λ2 is

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