Home
Class 11
CHEMISTRY
He atom can be excited to 1s^(1) 2p^(1) ...

He atom can be excited to `1s^(1) 2p^(1)` by `lambda=58.44nm`. If lowest excited state for He lies `4857cm^(-1)` below the above. Calculate the energy for the lower excitation state.

Text Solution

Verified by Experts

The correct Answer is:
`3.3xx10^(-18)J`
Promotional Banner

Topper's Solved these Questions

  • ATOMIC STRUCTURE

    ALLEN|Exercise Exercise - 04[B]|13 Videos

  • ATOMIC STRUCTURE

    ALLEN|Exercise Exercise - 05[A]|43 Videos

  • ATOMIC STRUCTURE

    ALLEN|Exercise Exercise - 03|22 Videos

  • IUPAC NOMENCLATURE

    ALLEN|Exercise Exercise - 05(B)|8 Videos

Similar Questions

Explore conceptually related problems

He atom can be excited to 1s^(1)2p^(1)"by"lambda=58.44 nm If lowest excited state foe He lies 4857cm^(-1) below the above . Calculate the energy for the lower excitation state

Calculate the energy of Li^(+2) atom for 2^(nd) excited state.

Calculate the energy of a He^(+)ion in its first excited state solution

Calculate the radius of 2^(nd) excited state of Li^(+2)

Calculate the ratio of energies of He^(+) for 1^(st) & 2^(nd) excited state.

The energy of He+ in the ground state is -54.4 eV , then the energy of Li^(++) in the first excited state will be

Electron exicted from lower orbit to higher orbit and returns back to ground state from excited state with a life time1 nanosecond by emitting a photon of wave length 600nm. Calculate uncertainity in the energy of the excited state. Also calculate the percentage uncertainity, if the energy is measured from ground state.

The electron in the first excited state (n_(1)=2) of H - atom absorbs a photon and is further excited to n^(th) shell. The de-Broglie wavelength of the electron in this excited state is 1340 pm. Find the value of n .

Ground state He_2 does not exist. An electronic excited state of He_2

ALLEN-ATOMIC STRUCTURE-Exercise - 04[A]
  1. U.V. light of wavelength 800A^(@)&700A^(@) falls on hydrogen atoms in ...

    Text Solution

    |

  2. A potential diffrence , the 20kv is applied across an X- ray s tube ....

    Text Solution

    |

  3. The K.E. of an electron emitted from tungsten surface is 3.06 eV. What...

    Text Solution

    |

  4. What is de-Broglie wavelength of a He-atom in a container at room temp...

    Text Solution

    |

  5. Through what potential difference must an electron pass to have a wave...

    Text Solution

    |

  6. A proton is accelerated to one tenth of the velocity of light. If its ...

    Text Solution

    |

  7. To what effective potential a proton beam be subjected to give its pro...

    Text Solution

    |

  8. Calculate the number of exchange pairs of electrons present in configu...

    Text Solution

    |

  9. He atom can be excited to 1s^(1) 2p^(1) by lambda=58.44nm. If lowest e...

    Text Solution

    |

  10. A certain dye absorbs 4530A^(@) and fluoresence at 5080A^(@) these be...

    Text Solution

    |

  11. The reaction between H(2) and Br(2) to form HBr in presence of light i...

    Text Solution

    |

  12. The quantum yield for decomposition of HI id 0.2 .In an experiment ...

    Text Solution

    |

  13. Calculate the wavelength of the radiation that would cause photo disso...

    Text Solution

    |

  14. The dissociation energy of H(2) is 430.53 kJ mol^(-1), If H(2) is of d...

    Text Solution

    |

  15. An iodine molecule dissociates into atom after absorbing light of wav...

    Text Solution

    |

  16. X-rays emitted from a copper target and a molybdenum target are found ...

    Text Solution

    |

  17. What is de-Broglie wavelength associated with an e^(-) accelerated thr...

    Text Solution

    |

  18. Calculate the de-broglie wavelength associated with motion of earth (m...

    Text Solution

    |

  19. A base ball of mass 200 g is moving with velocity of 3 xx 10^(3) cm s...

    Text Solution

    |

  20. An electron has a speed of 40m//s, accurate up 99.99%.What is the unce...

    Text Solution

    |