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The ratio of the wave lengths of the fir...

The ratio of the wave lengths of the first line in the Lyman series of the spectrum of Hydorgen atom and the first line in the Balmer series of the spectrum of `He^(+)` is 

A

`20//27`

B

`27//20`

C

`27//5`

D

`5//27`

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-ATOMIC STRUCTURE-OBJECTIVE EXERCISE - 2
  1. The ratio of wavelength values of series limit lines (n(2) =oo) of Bal...

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  2. What electronic transition in Li^(2+) produces the radiation of the sa...

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  3. The ratio of the wave lengths of the first line in the Lyman series of...

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  4. The number of spectral lines that are possible when electrons in 7^("t...

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  5. In a certain electronic transition from the quantum level, 'n' to the ...

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  6. The minimum and maximum values of wave length in the Lyman series of a...

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  7. Which of the following transitions of an electron in hydrogen atom emi...

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  8. In a hydrogen atom, the electron is at a distance of 4.76Å from the nu...

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  9. Which of the following statements regarding spectral series is correct...

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  10. In a series in the line spectrum of hydrogen the wavelength of radiati...

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  11. The frequency of the spectral line obtained when the electron in n = 3...

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  12. When a greater number of electrons from excited hydrogen atoms reach t...

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  13. The first spectral line in the Pfund series of Hydrogen spectrum is gi...

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  14. A certain transition in H spectrum from an excited state to ground sta...

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  15. The radii of two of the first four Bohr orbits of the hydrogen atom ar...

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  16. Which one of the following statements is not correct?

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  17. The ratio of radii of first orbits of H, He^(+) and Li^(2+) is

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  18. The ratio of the radii of the first three orbits in an atom of hydroge...

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  19. The radius of hydrogen atom in the ground state is 0.53 Å, the radius ...

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  20. In hydrogen atom the kinetic energy of electron is 3.4 eV. The distanc...

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