Home
Class 12
PHYSICS
if an electron is revolving in its bohr ...

if an electron is revolving in its bohr orbit having bohr radius of `0.529Å`, then the radius of third orbit is

A

`4234Å`

B

`4496Å`

C

`4.761Å`

D

`5125nm`

Text Solution

Verified by Experts

The correct Answer is:
C
As`r_n=n^2a_0`,
Here, `a_0=0.529Å` and `n=3`
`therefore r_(n=3)=(3)^2a_0=9xx0.529Å=4.761Å`
Promotional Banner

Topper's Solved these Questions

  • ATOMS

    NCERT FINGERTIPS|Exercise The Line Spectra Of Hydrogen Atom|6 Videos

  • ATOMS

    NCERT FINGERTIPS|Exercise De Broglie Explanation Of Bohr Model|3 Videos

  • ATOMS

    NCERT FINGERTIPS|Exercise Atomic Spectra|19 Videos

  • ALTERNATING CURRENT

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • COMMUNITCATION SYSTEMS

    NCERT FINGERTIPS|Exercise HOTS|10 Videos

Similar Questions

Explore conceptually related problems

An electron is revolving in the n^(th) orbit of radius 4.2 Å , then the value of n is (r-1=0.529 Å)

The radius of second Bohr's orbit is

Calculate energy of electron which is moving in the orbit that has its radius , sixteen times the radius of first Bohr orbit for H-atom.

The radius of first Bohr orbit in H-atom is 0.53 Å. The radius of third orbit is

Radius of first bohr's orbit of hydrogen atom is 0.53 A then the radius of 3^(rd) bohr orbit is :-

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

If the radius of the first Bohr orbit of H atom is 0.5Å , the radius of third orbit will be

On the basis of Bohr’s model, the radius of the 3^("rd") orbit is :

If the radius of first Bohr orbit be a_0 , then the radius of the third orbit would be-

NCERT FINGERTIPS-ATOMS -Bohr Model Of Hydrogen Atom
  1. In the question number 59, the value of velocity of the revolving ele...

    Text Solution

    |

  2. A 10kg satellite circles earth once every 2hr in an orbit having a rad...

    Text Solution

    |

  3. if an electron is revolving in its bohr orbit having bohr radius of 0....

    Text Solution

    |

  4. the energy required to excite an electron in hydrogen atom to its firs...

    Text Solution

    |

  5. in the question number 63, the frequency of emitted photon due to the ...

    Text Solution

    |

  6. Which state of the triply ionized Beryllium (Be^(3+)) has the same orb...

    Text Solution

    |

  7. A difference of 2.3 eV separates two energy levels in an atom. What is...

    Text Solution

    |

  8. The ground state energy of hydrogen atom is -13.6eV. What are P.E. and...

    Text Solution

    |

  9. In the question number 67, find the potential energy of electron (in j...

    Text Solution

    |

  10. If the radius of inner most electronic orbit of a hydrogen atom is 5.3...

    Text Solution

    |

  11. A hydrogen atom initially in the ground level absorbs a photon and is ...

    Text Solution

    |

  12. In question number 70, what is frequency of photon ?

    Text Solution

    |

  13. The radius of electron orbit and the speed of electron in the ground s...

    Text Solution

    |

  14. In accordance with the Bohr's model, find the quantum number that char...

    Text Solution

    |

  15. if speed of electron is ground state energy level is 2.2xx10^(6)ms^(-1...

    Text Solution

    |

  16. if muonic hydrogen atom is an atom in which a negatively charged muon ...

    Text Solution

    |

  17. In the question number 75, if ground state energy of electron is -13.6...

    Text Solution

    |

  18. An electron is revolving in the n^(th) orbit of radius 4.2 Å, then the...

    Text Solution

    |

  19. Positronium is just like a H-atom with the proton replaced by the posi...

    Text Solution

    |

  20. The minimum energy that must be given to a H atom in ground state so t...

    Text Solution

    |