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  2. /Two statements about the Bohr model of the hydrogen atom are given below. Statement I: In every Bohr orbit of hydrogen, the kinetic energy of the electron is equal to half the magnitude of its potential energy. Statement II: The period of revolution of the electron in the n = 2 orbit is four times that in the n = 1 orbit, because the radius is four times larger.
PhysicsAdvancedHigh School (11–12)Modern Physics › Atoms and Atomic SpectraNEETAEEE (Amrita)AMUEEEAP EAPCETBCECECMI Entrance
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Two statements about the Bohr model of the hydrogen atom are given below. Statement I: In every Bohr orbit of hydrogen, the kinetic energy of the electron is equal to half the magnitude of its potential energy. Statement II: The period of revolution of the electron in the n=2n = 2n=2 orbit is four times that in the n=1n = 1n=1 orbit, because the radius is four times larger.

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← Assertion (A): When the electron of a hydrogen atom jumps from the n = 1 orbit to the n = 2 orbit, its kinetic energy falls to one quarter of the old value, and the total energy of the atom increases by 10.2 eV. Reason (R): In every Bohr orbit, the kinetic energy of the electron is equal to the total energy of the atom, and it is negative.Four statements about the spectrum of atomic hydrogen are given below. (i) Atoms excited to the level n = 5 can give ten different lines in all. (ii) The series limit wavelengths of the Lyman and Balmer series are in the ratio 1 : 4. (iii) A photon at the limit of the Paschen series has an energy of 3.4 eV. (iv) Every line of the Lyman series has a shorter wavelength than every line of the Balmer series. How many of the statements above are correct? →
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