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In a sample of H- atom electrons make tr...

In a sample of `H-` atom electrons make transition from `5^(th)` excited state to ground state, producing all possible types of photons, then number of lines in infrared region are

A

`4`

B

`5`

C

`6`

D

`3`

Text Solution

Verified by Experts

The correct Answer is:
C
Infrared lines =total lines -visible lines -UV lines `=(6(6-1))/(2)-4-5 =15-9=6`
`("visible lines" =4 6 rarr2, 5 rarr2, 4 rarr 2, 3 rarr 2)` " " `("UV lines" =5 6 rarr1, 5rarr 1, 4 rarr 1, 3 rarr 1, 2 rarr1)`
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RESONANCE ENGLISH-NUCLEAR CHEMISTRY-PART -II
  1. Which is the correct relationship? (a). E(1) of H=1//2E(2) of He^(+)=1...

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  2. If the value of E=-78.4 "kcal//mol", the order of the orbit in hydroge...

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  3. If velocity of an electronic in 1^(st) orbit of H atom is V, what will...

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  4. In a certain electronic transition in the hydrogen atoms from an init...

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  5. S(1) : Bohr model is applicable for Be^(2+) ion . S(2) : Total ener...

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  6. S(1) : Potential energy of the two opposite charge system increase wit...

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  7. The energy of a hydrogen atom in its ground state is -13.6 eV. The ene...

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  8. The wavelength of a spectral line for an electronic transition is inv...

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  9. In a sample of H- atom electrons make transition from 5^(th) excited ...

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  10. Total no of lines in Lyman series of H spectrum will be- (where n=n...

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  11. No. of visible lines when an electron return from 5^(th) orbit to grou...

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  12. Suppose that a hypothetical atom gives a red, green, blue and violet l...

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  13. The difference between the wave number of 1st line of Balmer series an...

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

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  15. What possibly can the ratio be of the de Broglie wavelength for two el...

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  16. In H-atom if r1 is the radius fo first Bohr orbit is x then de-Broglie...

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  17. An alpha-particle is accelerated through a potential difference of V v...

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  18. de-Broglie wavelength of electron in second orbit of Li^(2+) ion will ...

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  19. The wavelength of a charged particle ………….. the square root of the pot...

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  20. The uncertainty in the momentum of an electron is 1.0 xx 10^(-5) kgms^...

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