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Consider the spectral line resulting fro...

Consider the spectral line resulting from the transition from n=2 to n=1, in atoms and ions given below. The shortest wavelength is produced by

A

hydrogen atom

B

deuterium atom

C

singly ionized helium

D

doubly ionized lithium

Text Solution

Verified by Experts

The correct Answer is:
D
As wavelength radiated during transition is given by
`(hc)/(lamda)=E_(2)-E_(1)=DeltaE and DeltaE prop(Z^(2))/(n^(2))`
So, for lithium atom Z will be higher and therefore it produced shortest wavelength.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ATOMS, MOLECULES AND NUCLEI -Exercise 1 (TOPICAL PROBLEMS)
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  2. In Rutherford's alpha particle experiment with thin gold foil, 8100 sc...

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  3. Consider the spectral line resulting from the transition from n=2 to n...

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  4. If and alpha-paricle of mass m, charged q and velocity v is incident o...

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  5. The energy of an electron in excited hydrogen atom is -3.4 eV . Then, ...

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  6. The radius of the smallest electron orbitin hydrogen like ion is (0.51...

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  7. First Bohr radius of an atom with Z=82 is r. radius its third orbit is

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  8. The ratio of minimum wavelengths of Lyman and Balmer series will be

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  9. Solar spectrum is an example for

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  10. If the series limit wavelength of the Lyman series for hydrogen atom i...

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  11. What will be the angular momentum in fourth orbit, if L is the angular...

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  12. The total energy of eletcron in the ground state of hydrogen atom is -...

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  13. If the binding energy of the electron in a hydrogen atom is 13.6 eV, t...

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  14. If the energy of a hydrogen atom in nth orbit is E(n), then energy in ...

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  15. the ionization energy of Li^(++) is equal to

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  16. An electron with kinetic energy 5eV is incident on a hydrogen atom in ...

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  17. The potential energy of the orbital electron in the ground state of hy...

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  18. In which of the following systems will the radius of the first orbit (...

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  19. Compare the radii of the nuclei of mass numbers 27 and 64.

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  20. The wavelength of K(alpha) line in copper is 1.54 Å. The ionisation en...

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