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Atomic hydrogen is excited from the grou...

Atomic hydrogen is excited from the grounds state to the `n^(th)` state. The number of lines in the emission spectrum will be:

A

`(n(n+1))/(2)`

B

`(n(n-1))/(2)`

C

`((n-1)^(2))/(2)`

D

`((n+1)^(2))/(2)`

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The correct Answer is:
B
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AAKASH SERIES-ATOMS-EXERCISE - I
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  4. Hydrogen atom does not emit X-rays because:

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  5. Atomic hydrogen is excited from the grounds state to the n^(th) state....

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  6. Which of the following is not correct in Bohr model of hydrogen atom?

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  7. Which of the following transitions gives photon of maximum energy

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  8. The Bohr's model of atoms:

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  9. Bohr's model for the hydrogen atom predicts that the absorption spectr...

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  10. Three photons coming from excited atomic hydrogen sample are picked up...

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  11. Whenever a hydrogen atom emits a photon in the Balmer series

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  12. When a hydrogen atom is raised from the ground state to fifth stale(ex...

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  13. Consider a spectral line resulting from the transition n = 5 to n = 1,...

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  15. If the radius of an orbit is r and the velocity of electron in it is v...

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  16. As the quantum number increases, the difference of energy between cons...

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  17. Which of the following parameters are the same for all hydrogen-like a...

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  18. The electron in a hydrogen atom makes a transition from an excited sta...

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  19. The angular momentum of an electron in a hydrogen atom is proportion t...

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  20. The number of spectral lines in hydrogen atom are

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