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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 Exericse - 2A
  1. In a hydrogen atom the electron and proton are at a distance of 0.5 Å....

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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. An electron in the ground state of hydrogen atom is revolving in anti ...

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

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

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

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

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  9. The radius of the hydrogen atom in the ground state is of the order o...

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  10. The ground state energy of hydrogen atom is - 13.6eV. The kinetic ener...

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  11. Radius of 3rd Bohr orbit is

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  12. The energy of second Bohr'orbit of hydrogen atom is -328 kJ mol^(-1), ...

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  13. Which of the following transistions in hydrogen atom will require the ...

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  14. The energy of an electron in the first Bohr's orbit of a hydrogen atom...

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

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  16. Ratio of the distance travelled in 1 second, 2 seconds, 3 seconds

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  17. The de Broglie wavelength of a particle with mass 1 g and velocity 100...

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

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

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  20. The wavelength associated with a golf ball weighing 200g and moving at...

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