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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 Hydrogen 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 - 3
  1. The wavelength of the spectral line, For the transition n = 2 to n=1 i...

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

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  5. In Bohr series of lines of hydrogen spectrum, the third line from the ...

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  6. Kinetic energy of electron in a mono electronic species is +1313 lJ/mo...

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  7. Ionisation energy of He^(+) is 19.6 xx 10^(-18)"J atom"^(-1) The energ...

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  8. The kinetic energy of an electron in an orbit of hydrogen atom is 3.4 ...

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  9. The ionisation potential of Hydrogen is 2.17 xx 10^(-11) erg/atom. The...

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  10. (A) : In an atom the velocity of electron as it moves into higher orbi...

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  11. The wavelength of radiation required to remove the electron of hydroge...

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

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  13. Choose the correct statement (s) (i) The energy of an electron in an...

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  14. The velocity of electron in hydrogen atom is 7.29 xx 10^(7) cm/sec The...

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  15. A particle of mass one microgram is confined to move along one directi...

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  16. The set of quantum numbers 'n' and 'l' possible for the orbital shown ...

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  17. In a multi-electron atom, which of the following orbitals described by...

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  18. An electron has magnetic quantum number as '-3'. Its principal quantum...

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  19. The correct match is

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  20. Which one of the following statements is correct ?

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