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Time taken by an electrons to complete o...

Time taken by an electrons to complete one revolution in the Bohr orbit of the `H` atom is

A

`(nh)/(4pi^(2)mr)`

B

`(4pi^(2)mr^(2))/(nh)`

C

`(2pimr)/(n^(2)h^(2))`

D

`h/(2pimr)`

Text Solution

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The correct Answer is:
B
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FIITJEE-ATOMIC STRUCTURE-ASSIGNMENT PROBLEMS (OBJECTIVE) LEVEL-I
  1. Time taken by an electrons to complete one revolution in the Bohr orbi...

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  2. The radius of which of the following orbit is same as that of the firs...

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  3. If the nitrogen atom has electronic configuration 1s^(7), it would hav...

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  4. An electron is allowed to move freely in a closed cubic box of length ...

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  5. The quantum number + 1//2 and -1//2 for the electron spin represent

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  6. Spin magnetic moment of X^(n+) (Z=26) is sqrt(24) B.M. Hence number of...

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  7. In Boh'r series of lines of hydrogen spectrum, the third line from the...

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  8. Among the following series of transition metal ions, the one where all...

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  9. how fast is an electron moving if it has a wavelength equal to the dis...

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  10. The radial distribution curve of 2s sub-level consists of x nodes. Va...

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  11. For any electron, the magnetic moment is …………….. To the orbital angula...

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  12. If uncertainty in position and momentum are equal then uncertainty in ...

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  13. The radius of first Bohr orbit is x, then de-Broglie wavelength of ele...

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  14. The shortest wavelength of H-atom in Lyman series is x, then longest w...

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  15. In centre-symmetrical system, the orbital angular momentum, a measure ...

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  16. The correct set of four quantum numbers for valence electrons of rubid...

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  17. If n and l are respectively the principal and azimuthal quantum number...

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  18. If travelling at equal speed, the longest wavelength of the following ...

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  19. Which of the following ions is paramagnetic?

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  20. Three metals A B and C have work functions as 15.5eV, 24eV and 30.5 eV...

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