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The energy of a hydrogen atom in the gro...

The energy of a hydrogen atom in the ground state is `-13.6 eV`. The eneergy of a `He^(+)` ion in the first excited state will be

A

`-6.8eV`

B

`-13.6eV`

C

`-27.2eV`

D

`-54.4eV`

Text Solution

Verified by Experts

The correct Answer is:
B
`E_(n) =(z^2)/(n^2)(-13.6e V)`
`=(4)/(4) (-13.6e V) =-13.6e V`.
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NARAYNA-ATOMS -EXERCISE -3
  1. The total energy of eletcron in the ground state of hydrogen atom is -...

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  2. Which of the following transition in hydrogen atom emit photons of big...

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  3. The groud state energy of hydrogen atom is -13.6 eV. When its electron...

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  4. In a Rutherford scattering experiment when a projectile of change Z(1)...

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  5. The ionization enegry of the electron in the hydrogen atom in its grou...

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  6. The radius of an electron orbit in a hydrogen atom is of the order of

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  7. Among the following four spectral regions, the photon has the highest ...

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  8. The energy of a hydrogen atom in the ground state is -13.6 eV. The ene...

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  9. An electron in the hydrogen atom jumps from excited state n to the gro...

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  10. Electron in hydrogen atom first jumps from third excited state to seco...

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  11. The electron in hydrogen atom makes a transition n(1)ton(2) where n1 a...

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  12. Hydrogen atom in ground state is excited by a monochromatic radiation ...

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  13. The wavelength of the first line of Lyman series for hydrogen atom is ...

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  14. Out of the following which one is not a possible energy for a photon t...

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  15. Electron in hydrogen atom first jumps from third excited state to seco...

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  16. An electrons of a stationary hydrogen aton passes form the fifth enegr...

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  17. The transition form the state n = 3 to n = 1 in a hydrogen-like atom r...

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  18. Ratio of longest wavelengths corresponding to Lyman and Balmer series ...

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  19. In the spectrum of hydrogen atom, the ratio of the longest wavelength ...

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  20. If an electron in a hydrogen atom jumps from the 3rd orbit to the 2nd ...

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