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If in Bohr's model, for unielectronic at...

If in Bohr's model, for unielectronic atom, time period of revolution is represented as `T_(n,z)` where `n` represents shell no. and `Z` represents atomic number then the value of `T_(1,2):T_(2,1)` , will be `:`

A

`8:1`

B

`1:8`

C

`1:1`

D

`1:32`

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NARENDRA AWASTHI-ATOMIC STUCTURE-Exercise
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  2. What is the separation energy (in eV ) for Be^(3+) in the first excite...

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  3. If in Bohr's model, for unielectronic atom, time period of revolution ...

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  4. Which of the following is discreted in Bohr's theory?

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  5. What is the ratio of time periods (T(1)//T(2)) in second orbit of hydr...

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  6. The mass of an electron is m, charge is e and it is accelerated form r...

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  7. If the ionization energy of He^(+) is 19.6xx10^(-18) J per atom then t...

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  8. The energy of the second Bohr orbit in the hydrogen atom is -3.41eV. T...

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  9. The energy of an electron moving in n^(th) Bohr's orbit of an element ...

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  10. If epsilon(0) be the permittivity of vacuum and r be the radius of orb...

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  11. Which of the following statement(s) is//are consistent with the Bohr t...

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  12. The ionization potential for the electron in the ground state of the h...

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  13. What is the energy content per photon (J) for light of frequency 4.2xx...

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  14. Wavelength for high energy EMR transition in H-atom is 91 nm. What ene...

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  15. Which graph shows how the energy E of a photon of light is related to ...

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  16. Assume that 10^(-17)J of light energy is needed by the interior of the...

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  17. Line spectra is characteristic of :

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  18. The spectrum produced from an element is :

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  19. Electronic transition in He^(+) ion takes from n(2) " to " n(1) shell ...

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  20. Which of the following expressions represents the spectrum of Balmer s...

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