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What is the wavelength of the least energetic photon emitted in the Lyman series of the hydrogen atom spectrum ?

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Important Questions on Atomic Physics

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What is the ratio of the shortest wavelength of the Balmer series to the shortest wavelength of the Lyman series?
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Kinetic energy for Hydrogen atom in first Bohr’s orbit is -
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According to Bohr Model for Hydrogen, energy is proportional to :
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According to Bohr Model for Hydrogen, The radius of orbit is related as :-
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If ionization potential of Hydrogen atom is 13.6 V then what is ionization potential of He atom ?
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Which of the following statements is correct ?
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According to the Bohr theory of Hydrogen atom, the speed of the electron, its energy and the radius of its orbit varies with the principal quantum number n, respectively, as
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If the ionization potential of hydrogen atom is 13.6 eV, its energy in the n=3 is approximately