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Calculate the period of revolution of an...

Calculate the period of revolution of an electron revolving in the first orbit of hydrogen atom. Given radius of first orbit `= 0.53 Å` and `c = 3 xx 10^(8) " ms"^(-1)`

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`T=(2pir)/v`
`v=c/(137n)`
n=1, `T=(2xx3.14xx0.53xx10^(-10))/(3xx10^8)xx137`
`=1.52xx10^(-16)` s
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MODERN PUBLICATION-ATOMS -Revision Exercise (Numerical Problems )
  1. Calculate the energy of an a-particle if in a collision of this partic...

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  2. (a) Name different series of lines observed in hydrogen spectrum. (b...

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  3. Find the value of angular momentum of an electron in the 4^(th) orbit ...

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  4. Calculate the period of revolution of an electron revolving in the fir...

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  5. Obtain the expression for the ratio of the de Broglie wavelengths asso...

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  6. What is the shortest wavelength present in the Paschen series of spect...

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  7. If the wavelength of Halpha line of Balmer seriesin hydrogen spectrum ...

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  8. Given that the Bohr radius of hydrogen atom is 5.3xx10^(-11) m . Deter...

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  9. The electron in a hydrogen atom initially in state of quantum number n...

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  10. In the ground state of hydrogen atom, its Bohr radius is 5.3xx10^(-11)...

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  11. (a) The radius of the innermost electron orbit of a hydrogen atom is 5...

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  12. (a) Calculate the kinetic energy and potential energy of the electron ...

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  13. Calculate the energy required to excite an electron from ground state ...

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  14. A hydrogen atom in its excited state emits radiations of wavelengths 1...

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  15. Find the ratio between the wavelength of the most energetic' spectral ...

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  16. The period of revolution of electron in the third orbit in a H-atom is...

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  17. Find out the ratio of energies of photons produced when an electron (i...

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  18. Draw the energy-level diagram of hydrogen atom. Show the Lyman series ...

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  19. A 12.5 eV electron beam is used to bombard gaseous hydrogen at room te...

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  20. Given the ground state energy E0 = -13.6 eV and Bohr radius a0 = 0.53 ...

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