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What would be the radius of second orbit...

What would be the radius of second orbit of `He^(+)` ion?

A

`1.058 A^(@)`

B

`3.023 A^(@)`

C

`2.068 A^(@)`

D

`4.458 A^(@)`

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The correct Answer is:
A
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AAKASH SERIES-ATOMS-EXERCISE -II
  1. A hydrogen like atom (atomic number Z) is in a higher excited state o...

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  2. Electrons from n = 2 to n= 1 in hydrogen atom is made to fall on a met...

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  3. Let v(1) be the frequency of the series limit of the Lyman series, v(2...

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  4. The transition from the state n = 4 " to " n = 3 in a hydrogen like at...

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  5. Energy required for the electron excitation in Li^(++) from the first ...

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  6. What would be maximum wavelength for Brackett series of hydrogen-spect...

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  7. What would be the radius of second orbit of He^(+) ion?

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  8. The wavelength of Lymen series for first number is

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  9. The principal quantum number, n describes

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  10. What is ratio of Bohr magneton to the nuclear magneton?

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

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  12. Ionization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in th...

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  13. A hydrogen atom initially in the ground level absorbs a photon and is ...

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  14. The speed of the electron in a hydrogen atom in the n = 3 level is

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

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

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  17. Given the value of Rydberg constant is 10^(7) m^(-1), the wave number ...

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  18. When an alpha- particle of mass m moving with velocity bombards on a h...

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  19. The ratio of wavelengths of the last line of Balmer series and the las...

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  20. The ratio of kinetic energy to the total energy of an electron in a Bo...

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