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The radius of which of the following orb...

The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom? 

A

`He^(+)(n=2)`

B

`Li^(2+)(n=2)`

C

`Li^(2+)(n=3)`

D

`Be^(3+)(n=2)`

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-ATOMIC STRUCTURE-OBJECTIVE EXERCISE - 2
  1. The energy of an electron in the first Bohr's orbit of a hydrogen atom...

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  2. The total energy of electron in an atom is a combination of potential ...

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  3. The radius of which of the following orbit is same as that of the firs...

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  4. The change in velocity when electron jumps from the first orbit to the...

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  5. As an electron is brought from an infinite distance close to nucleus o...

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

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  7. The Ionisation potential of Hydrogen is 2.17 xx10^(-1) erg/atom. The e...

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

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

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

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  11. The velocity of electron in hydrogen atom is 7.29 xx 10cm/sec. The pot...

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  12. In an atom two electrons move around the nucleus in circular orbits of...

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  13. E(1) for He is -54.4 eV. The E(2) for He^(+) would be

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  14. Using Bohr's equation for the energy levels of the electron in Hydroge...

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  15. The de Broglie wavelength associated with a moving particle of fixed m...

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  16. For an electron to have the same de Broglie wave length as that of a D...

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  17. What possibly can the ratio be of the de Broglie wavelengths for two e...

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  18. The wavelength in meters, of an object of mass 1.0g moving with a velo...

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  19. A hydrogen molecule and helium atom are moving with the same velocity....

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  20. Wavelength of an electron is 5Å Velocity of the electron is

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