Home
Class 12
PHYSICS
A hydrogen atom ia in excited state of ...

A hydrogen atom ia in excited state of principal quantum number `n` . It emits a photon of wavelength `lambda` when it returnesto the ground state. The value of `n` is

A

`sqrt(lambdaR(lambdaR-))`

B

`sqrt((lambdaR)/((lambdaR-1)))`

C

`sqrt((lambdaR-1)/(lambdaR))`

D

`sqrt(1/(lambdaR(lambdaR-1)))`

Text Solution

Verified by Experts

The correct Answer is:
B
form `1/lambda=R(1/(1^(2))-1/(n^(2)))`
`R/(n^(2))=R-1/lambda=(lambdaR-1)/lambda`
`n=sqrt((lambdaR)/((lambdaR-1)))`
Promotional Banner

Topper's Solved these Questions

  • ATOMS AND NUCLEI

    PRADEEP|Exercise Fill in the blank 2|1 Videos

  • ATOMS AND NUCLEI

    PRADEEP|Exercise Multiple choice questions 1|1 Videos

  • ATOMS AND NUCLEI

    PRADEEP|Exercise curiocity quetions 3|1 Videos

  • COMMUNICATION SYSTEMS

    PRADEEP|Exercise MODEL TEST PAPER-2|9 Videos

Similar Questions

Explore conceptually related problems

An excited state of H atom emits a photon of wavelength lamda and returns in the ground state. The principal quantum number of excited state is given by:

Hydrogen atoms are excited from ground state to the principal quantum number 5. Number of spectral lines observed will be

A hydrogen like atom number Z is in an excited state of quantum number 2n. It can emit a maximum energy photon of 204 eV. If it makes a transition ot quantum state n, a photon of energy 40.8 eV is emitted. Find n, Z and the ground state energy (in eV) of this atom. Also calculate the minimum energy of hydrogen atom is -13.6 ev.

Hydrogen atom is excieted from ground state to another state with principal quantum number equal to 4

In a hydrogen sample atoms are excited to the state with principal quantum number n. The number of different possible wavelengths emitted is

He^(+) is in n^(th) state. It emits two successive photons of wavelength 103.7nm and 30.7nm , to come to ground state the value of n is:

Hydrogen atom from excited state comes to the ground state by emitting a photon of wavelength lambda . If R is the Rydberg constant, then the principal quatum number n of the excited state is

The electron in a hydrogen atom jumps back from an excited state to ground state, by emitting a photon of wavelength lambda_(0) = (16)/(15R) , where R is Rydbergs's constant. In place of emitting one photon, the electron could come back to ground state by

The electron in a hydrogen atom initially in state of quantum number n_1 makes a transition to a state whose excitation energy with respect to the ground state is 10.2 eV. If the wavelength associated with the photon emitted in this transition is 487.5 nm, find the (i) energy in eV, and (ii) value of the quantum number, n_1 of the electron in its initial state.

PRADEEP-ATOMS AND NUCLEI-Exercise
  1. Shows the energy levels for an electron in a certain atom. Which trans...

    Text Solution

    |

  2. As the electron in the Bohr orbit is hydrogen atom passes from state n...

    Text Solution

    |

  3. A hydrogen atom ia in excited state of principal quantum number n . I...

    Text Solution

    |

  4. When an alpha-particle of mass 'm' moving with velocity 'v' bombards o...

    Text Solution

    |

  5. Suppose an electron is attracted toward the origin by a force(k)/(r ) ...

    Text Solution

    |

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

    Text Solution

    |

  7. The energy of a hydrogen atom in the ground state is -13.6 eV. The ene...

    Text Solution

    |

  8. The wavelength of the first spectral line in the Balmer series of hydr...

    Text Solution

    |

  9. The wavelength of the first line of Lyman series for hydrogen atom is ...

    Text Solution

    |

  10. Some energy levels of a molecule are shown in the fig. The ratio of t...

    Text Solution

    |

  11. Out of the following which one is not a possible energy for a photon t...

    Text Solution

    |

  12. A diatomic molecule is made of two masses m(1) and m(2) which are sepa...

    Text Solution

    |

  13. Electron in hydrogen atom first jumps from third excited state to seco...

    Text Solution

    |

  14. An electrons of a stationary hydrogen aton passes form the fifth enegr...

    Text Solution

    |

  15. The transition form the state n = 3 to n = 1 in a hydrogen-like atom r...

    Text Solution

    |

  16. In a hydrogen like atom electron make transition from an energy level ...

    Text Solution

    |

  17. Hydrogen atom in ground state is excited by a monochromatic radiation ...

    Text Solution

    |

  18. Hydrogen ((1)H^(1)) Deuterium ((1)H^(2)) singly omised helium ((1)He...

    Text Solution

    |

  19. Balmer gives an equation for wavelength of visible radition of H^(-) s...

    Text Solution

    |

  20. The kinetic energy of the electron in an orbit of radius r in hydrogen...

    Text Solution

    |