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In which of the following systems will b...

In which of the following systems will be the radius of the first orbit `(n=1)` be minimum ?

A

Doubly ionized lithium

B

Singly ionized helium

C

Deuterium atom

D

Hydrogen atom

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The correct Answer is:
A
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AAKASH SERIES-ATOMS-EXERCISE - I
  1. According to Bohr's principle , the relation between principle quantum...

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  2. The diagram shows the energy levels for an electron in a certain atom....

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  3. The wavelengths involved in the spectrum of deuterium (.(1)^(2)D) are...

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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 about bohr model of the hydrogen...

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

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  8. The Bohr model of atoms

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  9. Bohr's model of hydrogen atom.

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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 emitsa photon in the Balmer series .

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  12. When a hydrogen atom is raised from the ground state to an excited sta...

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

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  14. In which of the following systems will be the radius of the first orbi...

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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 n (number of orbit) increases, the difference of energy between...

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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 proportional...

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  20. The equation corresponding to the wave number of spectral lines in Pfu...

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