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The radius of first Bohr orbit is 0.53 A...

The radius of first Bohr orbit is` 0.53 A^@`. The value of n if the radius of `n^th` bohr orbit is ` 53A^@`, is

A

10

B

30

C

40

D

20

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CHETANA PUBLICATION-Structure of atoms and nuclei-EXERCISE
  1. The ionisation potential of H2 atom is

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  2. The ratio of radii of the first three Bohr orbits is

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  3. The radius of first Bohr orbit is 0.53 A^@. The value of n if the radi...

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  4. The relation between force acting on the electron and principle quantu...

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  5. The unit of Rydberg's constant is

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  6. The shortest wavelength of Balmer series is given by

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  7. The longest wavelength in Paschen series is obtained when an electron ...

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  8. The Lyman series involves

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  9. In an atom, two electrons move around the nucleus in circular orbits t...

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  10. The energy in the ground state of hydrogen atom is -13.6 eV, then ener...

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  11. The De Broglie wavelength associated with a particle of mass m and vel...

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  12. In which of the following systems will the radius of the first orbit o...

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  13. The radius of the 4th orbit of the electron will be smaller than its 8...

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  14. In the spectrum of hydrogen atom which transition will yield longest w...

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  15. Which of the following properties of a nucleus does not depend on it...

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  16. If the number of nuclei in a radioactive sample at a given time is N, ...

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  17. The volume of the nucleus is proportional to

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  18. What is the relation between the radius of the nucleus and the mass nu...

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  19. The nucleus having same mass number is called

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  20. The energy of an electron moving with the velocity of light is given b...

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