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If radius of first orbit of hydrogen at...

If radius of first orbit of hydrogen atom is `5.29xx10^(-11)` m, the radius of fourth orbit will be

A

8.46 Å

B

10.23 Å

C

9.22 Å

D

9.48 Å

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The correct Answer is:
A
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AAKASH INSTITUTE-ATOMS-ASSIGNMENT SECTION A Objective (One option is correct )
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  2. The ratio of energies of hydrogen atom in its first excited state to t...

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  3. How many spectral lines are emitted by atomic hydrogen excited to the ...

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  4. The energy of hydrogen atom in its ground state is -13.6 eV , the ener...

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  5. In which transition of a hydrogen atom, photons of lowest frequency ar...

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  6. Total energy of an electron in the hydrogen atom in the ground state i...

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  7. Using Bohr's formula for energy quantization, the ionisation potenti...

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  8. Which of the following cannot be the value of ionisation energy for a ...

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  9. Name the spectral series of hydrogen atom, which be in infrared region...

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  10. Three energy levels L1,L2 and L3 of a hydrogen atom correspond to incr...

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  11. if the wavelength of first member of Lyman series is lambda then calcu...

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  12. In Bohr's model of the hydrogen atom the ratio between the period of r...

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  13. How many times does the electron go round the first Bohr's orbit of hy...

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  14. If an electron in hydrogen atom jumps from third orbit to second orbit...

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  15. If radius of first orbit of hydrogen atom is 5.29xx10^(-11) m, the ra...

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  16. Bohr's atomic model is applicable for

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  17. Let F1 be the frequency of second line of Lyman series and F2 be the ...

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  18. The differnce between nth and (n+1) the Bohr radius of B atom is equa...

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  19. The lines in Balmer series have their wavelengths lying between

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