Home
Class 12
PHYSICS
The wavelength of the energy emitted whe...

The wavelength of the energy emitted when electron come from fourth orbit to second orbit in hydrogen is `20.397 cm`. The wavelength of energy for the same transition in `He^(+)` is

A

`5.099 cm^(-1)`

B

`20.497 cm^(-1)`

C

`40.994 cm^(-1)`

D

`81.988 cm^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ATOMS, MOLECULES AND NUCLEI

    TARGET PUBLICATION|Exercise Competitive Thinking|180 Videos

  • ATOMS, MOLECULES AND NUCLEI

    TARGET PUBLICATION|Exercise Evaluation test|19 Videos

  • ATOMS, MOLECULES AND NUCLEI

    TARGET PUBLICATION|Exercise Evaluation test|19 Videos

  • CIRCULAR MOTION

    TARGET PUBLICATION|Exercise EVALUATION TEST|11 Videos

Similar Questions

Explore conceptually related problems

The wave number of energy emitted when electron jumps from fourth orbit to second orbit in hydrogen in 20,497cm^(-1) . The wave number of energy for the same trasition in He^(+) is

The wavelength of the radiation emitted with an electron jumps from the fourth orbit to the second orbit in an hydrogen atom is 20.36 cm. what is the wavelength of radiation emitted for the same transition in He^+ ?

What is the energy emitted when an electron jumps froms second orbit to first orbit in a hydrogen atom ?

when an electron jumps from the fourth orbit to the second orbit, one gets the

What is the energy required to remove an electron from second orbit of hydrogen atom ?

If the wavelength of photon emitted due to transition of electron from third orbit to first orbit in a hydrogen atom is lambda then the wavelength of photon emitted due to transition of electron from fourth orbit to second orbit will be

Find the wavelength of the emitted radiation,if electron in hydrogen atom jumps from third orbit to second orbit.

When the electron in a hydrogen atom jumps from the second orbit to the first orbit , the wavelength of the radiation emitted is lamda . When the electron jumps from the third orbit to the first orbit , of the same atom , the wavelength of the emitted radiation would be

TARGET PUBLICATION-ATOMS, MOLECULES AND NUCLEI -Critical Thinking
  1. The de-Broglie wavelength of an electron revolving in the ground state...

    Text Solution

    |

  2. A particle X moving with a certain velocity has a debroglie wave lengt...

    Text Solution

    |

  3. An electron is having a kinetic energy of 50 eV. Its de-Broglie wavele...

    Text Solution

    |

  4. An electron and a proton are accelerated through the same potential di...

    Text Solution

    |

  5. In the Bohr model of a hydrogen atom, the centripetal force is furnish...

    Text Solution

    |

  6. The wavelength of the energy emitted when electron come from fourth or...

    Text Solution

    |

  7. The time of revolution of an electron around a nucleus of charge Ze in...

    Text Solution

    |

  8. If the binding energy of the electron in a hydrogen atom is 13.6 eV th...

    Text Solution

    |

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

    Text Solution

    |

  10. The half-life a radioacitve substance is 40 yeard. How long will it ta...

    Text Solution

    |

  11. The rest mass of an electron as well as that of positron is 0.51 MeV. ...

    Text Solution

    |

  12. In Bohr's model of hydrogen atom, the period of revolution of the elec...

    Text Solution

    |

  13. Energy of the lowest level of hydrogen atom is -13.6 eV. The energy of...

    Text Solution

    |

  14. Ionization potential of hydrogen atom is 13.6 V. Hydrogen atoms in the...

    Text Solution

    |

  15. If in nature they may not be an element for which the principle quantu...

    Text Solution

    |

  16. If the binding energy per nucleon of deuterium is 1.115 MeV, its mass ...

    Text Solution

    |

  17. Two samples X and Y contain equal amounts of radioactive substances. I...

    Text Solution

    |

  18. Assertion: Balmer series lies in visible region of electromagnetic spe...

    Text Solution

    |

  19. Assertion: Natural radioactive nuclei are nuclei of high mass number. ...

    Text Solution

    |

  20. Assertion: The density of nucleus is maximum at the center and falls t...

    Text Solution

    |