Home
Class 12
PHYSICS
Energy required for the electron excitat...

Energy required for the electron excitation in `Li^(++)` from the first to the third Bohr orbit is:

A

`12.1 eV`

B

`36.3 eV`

C

`108. 8 eV`

D

`122.4 eV`

Text Solution

Verified by Experts

The correct Answer is:
C
`E_(1)=(13.6(3)^(2))/((1)^(2))`
`E_(3)=(13.6(3)^(2))/((3)^(2))`
`:. DeltaE-E_(3)-E_(1)`
`=13.6(3)^(2)[1-(1)/(9)]`
`=(13.6xx9xx8)/(9)`
`DeltaE=108.8 eV`
Promotional Banner

Topper's Solved these Questions

  • ATOMIC PHYSICS

    RESONANCE|Exercise Advanved level problems|17 Videos

  • ATOMIC PHYSICS

    RESONANCE|Exercise Exercise-2 Part-III : Comprehension|12 Videos

  • ALTERNATING CURRENT

    RESONANCE|Exercise HIGH LEVEL PROBLEMS|11 Videos

  • CAPACITANCE

    RESONANCE|Exercise High Level Problems|16 Videos

Similar Questions

Explore conceptually related problems

Determine the wavelength of the radiation required to excite the electron in Li^(+ +) from the first to the third Bohr orbit.

(a)Find the wavelength of the radiation required to excited the electron is Li^(++) from the first to the third Bohr orbit (b) How many speciral are obseved in the emission apactrum of the above excited system?

(a) (i) Find the wavelength of the radiation required to excite thye elctron in Li(++) from the first to the third Bohr orbit. (ii) How many spectal lines are observed in the emission spectrum of the above excited system ? (b) The energy needed to detach the electron of a hydrogen-like ion in ground state in 4 rydberg. (i) What is the wavelength of the radiation emitted when the electron jumps from the first excited state ot the ground state ? (ii) What is the radius of first orbit ? (c ) A hydrogen sample is prepared in a particular excited state A. Photons of energy 2.55 eV get absorbed into the sample to take some electrons to a further excited state B. Find the quantum number of the A and B. (d) A hydrogen atom in a state having a binding energy of 0.85 eV makes transition to a state with excitation energy 10.2 eV. (i) Identify the quantum number n of the upper and the lower energy states. Find lambda .

A double ionised lithium atom is hydrogen like with atomic number 3 (i)Find the wavelength of the radiation to excite the electron in Li^(++) from the first to the third bohr orbit (lonisection energy of the hydrogen atom equals 13. 6) (ii) How many spectral lines are observed in the emission spetrum of the above excled system ?

A doubly ionized lithium atom is hydrogen like with atomic number 3. Find the wavelength of the radiation required to excite the electron in Li^(++) from to the third Bohr orbit (ionization energy of the hydrogen atom equals 13.6 eV).

A doubly ionized lithium atom is hydrogen like with atomic . number 3. Find the wavelength of the radiation to excite the electron in . Li++ form the first to the third Bohr orbit. The ionization energy of the hydrogen . Atom is 13.6V.

A single electron orbits around a stationary nucleus of charge +Ze , where Z is a constant and e is the electronic charge. It requires 47.2 eV to excited the electron from the second Bohr orbit to the third Bohr orbit. Find (i) the value of Z, (ii) the energy required to excite the electron from the third to the fourth Bohr orbit and (iii) the wavelength of the electromagnetic radiation radiation to remove the electron from the first Bohr orbit to infinity.

RESONANCE-ATOMIC PHYSICS-Exercise -3 part -I JEE (Advanced)
  1. Statement - 1 : When ultraviolet light is incident on a photocell , it...

    Text Solution

    |

  2. If a source of power 4 kW produces 10^(20) photons//second, the radiat...

    Text Solution

    |

  3. Energy required for the electron excitation in Li^(++) from the first ...

    Text Solution

    |

  4. This question has statement - 1 and statement - 2 of the four choice g...

    Text Solution

    |

  5. After absorbing a slowly moving neutrons of mass m(N) (momentum ~0) a...

    Text Solution

    |

  6. Hydrogen atom is excieted from ground state to another state with prin...

    Text Solution

    |

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

    Text Solution

    |

  8. The anode voltage of photocellis kept fixed. The wavelength lambda of ...

    Text Solution

    |

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

    Text Solution

    |

  10. Hydrogen (.(1)H^(1)), Deuterum (.(1)H^(2)), singly ionised Hellium (....

    Text Solution

    |

  11. As an electron makes a transition from an excited state to the ground ...

    Text Solution

    |

  12. Ultraviolet light is incident on two photosensitive materials having w...

    Text Solution

    |

  13. Mention the significance of Davisson-Germer experiment. An alpha-parti...

    Text Solution

    |

  14. de Broglie wavelength associated with an electron acclerated through a...

    Text Solution

    |

  15. A hydrogen atom initially in the ground level absorbs a photon , which...

    Text Solution

    |

  16. Ultraviolet radiations of different frequencies v(1)are incident on tw...

    Text Solution

    |

  17. Draw a schematic diagram of the experiment used by. Davisson and Germe...

    Text Solution

    |

  18. The two lines A and B in fig. show the photo electron of de Broglie wa...

    Text Solution

    |

  19. Fig. shows the variation of stopping potential V0 with the frequency v...

    Text Solution

    |

  20. The ground state energy of hydrogen atom is -13.6 e V. a. What is th...

    Text Solution

    |