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Source of alpha-particles used in scatte...

Source of `alpha`-particles used in scattering experiment was

A

`._82Bi^216`

B

`._81Bi^216`

C

`._81Bi^214`

D

`._83^214Bi`

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The correct Answer is:
D
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AAKASH INSTITUTE-ATOMS-ASSIGNMENT SECTION A Objective (One option is correct )
  1. In scattering experiment , alpha -particles were deflected by

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  2. Energy of the beam of alpha-particles used by Geiger and Marsden in sc...

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  3. Source of alpha-particles used in scattering experiment was

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  4. What is the distance of closest approach to the nucleus for an alpha-p...

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  5. An alpha-particle colliding with one of the electrons in a gold atom l...

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  6. The angular momentum of an electron in a hydrogen atom is proportional...

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  7. When an electron in hydrogen atom is taken from fourth excited state t...

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  8. What is the angular momentum of an electron in Bohr's hydrogen atom wh...

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  9. Ground state energy of H-atom is -13.6 eV. The energy needed to ionise...

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  10. The energies of three conservative energy levels L3,L2 and L1 of hydro...

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  11. The product of angular speed and tangential speed of electron in n^"th...

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  12. The speed of an electron in the 4^"th" orbit of hydrogen atom is

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  13. What should be the ratio of minimum to maximum wavelength of radiation...

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  14. The ratio of energies of hydrogen atom in its first excited state to t...

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  15. How many spectral lines are emitted by atomic hydrogen excited to the ...

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

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  17. In which transition of a hydrogen atom, photons of lowest frequency ar...

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  18. Total energy of an electron in the hydrogen atom in the ground state i...

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  19. Using Bohr's formula for energy quantization, the ionisation potenti...

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  20. Which of the following cannot be the value of ionisation energy for a ...

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