Home
Class 11
CHEMISTRY
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

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

B

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

C

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

D

`h/(2pimr)`

Text Solution

Verified by Experts

The correct Answer is:
A
According to Bohr’s model -
`mvr=nh//2pi`
`v=(nh)/(2pimr)`
One revolution = `2pir`
Time taken = `(2pir)/v`
= `(2pirxx2pimr)/(nh)`
= `(4pi^(2)mr^(2))/(nh)`.
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Dual Nature of Electron) |16 Videos

  • STRUCTURE OF ATOM

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Uncertainty Principle and Schrodinger Wave Equation) |13 Videos

  • STRUCTURE OF ATOM

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Atomic Number, Mass Number, Atomic Species) |27 Videos

  • STATES OF MATTER

    ERRORLESS|Exercise ASSERTION AND REASON|11 Videos

  • THE P-BLOCK ELEMENTS (BORON AND CARBON FAMILY)

    ERRORLESS|Exercise Assertion & Reason|10 Videos

Similar Questions

Explore conceptually related problems

The time taken by the electron in one complete revolution in the n^(th) Bohr's orbit of the hydrogen atom is :

According to Bohr's theory the ratio of time taken by electron to complete one revolution in first excited and second excited states of hydrogen will be:

Calculate the number of waves made by a Bohr electyron in one complete revolution in n ^(th) orbit of H-atom, if ratio of de-Broglie wavelength asssociated with electron moving in n^(th) orbit and 2^(nd) orbit is 1.5.

Calculate the number of waves made by a Bohr electron in one complete revolution in nth orbit of He^(+) ion, if ratio of de-Broglie wavelength associated with electron moving in n^(th) orbit and 2^(nd) orbit is 2.0 :-

According to Bohr's theory, the ratio of the times taken by the electron in a hydrogen atom to complete one revolution in orbits corresponding to ground and first excited states is

The number of wave made by electron in one complete revolution in third Bohr's orbit are :

ERRORLESS-STRUCTURE OF ATOM-NCERT BASED QUESTIONS (Atomic Models and Planck.s Quantum Theory)
  1. The radius of the first orbit of H-atom is r. then the radius of the f...

    Text Solution

    |

  2. Which one of the following is considered as the main postulate of Bohr...

    Text Solution

    |

  3. Time taken by an electrons to complete one revolution in the Bohr orbi...

    Text Solution

    |

  4. The circumference of the second Bohr orbit of an electron in a hydro...

    Text Solution

    |

  5. The existence of a positively charged nucleus in an atom was discovere...

    Text Solution

    |

  6. splitting of spectral lines under the influences of magnetic field is ...

    Text Solution

    |

  7. In spectral series of hydrogen, the series which does not come in infr...

    Text Solution

    |

  8. In Balmer series of H atom spectrum, which electronic transitions repr...

    Text Solution

    |

  9. The emission spectrum of hydrogen is found to satisfy the expression f...

    Text Solution

    |

  10. The shortest wavelength in hydrogen spectrum of Lyman series when R(H)...

    Text Solution

    |

  11. The ratio of the frequency corresponding to the third line in the lyma...

    Text Solution

    |

  12. For balmer series in the spectrum of atomic hydrogen the wave number...

    Text Solution

    |

  13. Magnitude of K.E. in an orbit is equal to

    Text Solution

    |

  14. Which of the following statement(s) is true

    Text Solution

    |

  15. Positronium consists of an electron and a positron (a particle which h...

    Text Solution

    |

  16. The radus of hydrogen atom in the ground state 0.53 Å. The radius of L...

    Text Solution

    |

  17. What is the frequency of photon, whose momentum is 1.1xx10^(-23)kgms^(...

    Text Solution

    |

  18. Electron occupies the available orbital singly before pairing in any o...

    Text Solution

    |

  19. If the 1^(st) ionization energy of H atom is 13.6 eV, then the 2^(nd) ...

    Text Solution

    |

  20. The H-spectrum show:

    Text Solution

    |