Home
Class 12
PHYSICS
A lithioum atom has electron Assume the ...

A lithioum atom has electron Assume the following simple picture of the atom Two electron move close to the nucleas making up a spherical cloud in a circular orbit Bohr's model can be used for the motiobn of this third electron but`n = 1` state are not andiable is it calculate the ionzation energy of lithium in ground state using the above picture

Text Solution

Verified by Experts

In this picture the third electronmove in the field of a totalcharge`+5a- 2a= +e`Thus the energies are the same as that if hydrogen atoms The lowest energy is
`E_(2) =(E_(1))/(4) = (-13.6ev)/(4) = -3.4eV`
Thus, the ionitation energy of the atom in this picture is `3.4eV`
Promotional Banner

Topper's Solved these Questions

  • BOHR'S MODEL AND PHYSICS OF THE ATOM

    HC VERMA|Exercise Short Answer|10 Videos
  • BOHR'S MODEL AND PHYSICS OF THE ATOM

    HC VERMA|Exercise Objective 1|13 Videos
  • BOHR'S MODEL AND PHYSICS OF THE ATOM

    HC VERMA|Exercise Exercises|46 Videos
  • ALTERNATING CURRENT

    HC VERMA|Exercise Exercises|19 Videos
  • CAPACITORS

    HC VERMA|Exercise Exercise|2 Videos

Similar Questions

Explore conceptually related problems

(a) Using the Bohr’s model calculate the speed of the electron in a hydrogen atom in the n = 1, 2, and 3 levels. (b) Calculate the orbital period in each of these levels.

In the Auger process an atom makes a transition to a lower state without emitting a photon. The excess energy is transferred to an outer electron which may be ejected by the atom. (This is called an Auger electron). Assuming the nucleus to be massive, calculate the kinetic energy of an n = 4 Auger electron emitted by Chromium by absorbing the energy from a n = 2 to n = 1 transition

When a particle is restricted to move aong x axis between x =0 and x = a , where a is of nanometer dimension. Its energy can take only certain specific values. The allowed energies of the particle moving in such a restricted region, correspond to the formation of standing waves with nodes at its ends x = 0 and x = a . The wavelength of this standing wave is realated to the linear momentum p of the particle according to the de Breogile relation. The energy of the particl e of mass m is reelated to its linear momentum as E = (p^(2))/(2m) . Thus, the energy of the particle can be denoted by a quantum number 'n' taking values 1,2,3,"......." ( n=1 , called the ground state) corresponding to the number of loop in the standing wave. Use the model decribed above to answer the following three questions for a particle moving in the line x = 0 to x =a . Take h = 6.6 xx 10^(-34) J s and e = 1.6 xx 10^(-19) C . If the mass of the particle is m = 1.0 xx 10^(-30) kg and a = 6.6 nm , the energy of the particle in its ground state is closet to

When a particle is restricted to move aong x axis between x =0 and x = a , where a is of nanometer dimension. Its energy can take only certain specific values. The allowed energies of the particle moving in such a restricted region, correspond to the formation of standing waves with nodes at its ends x = 0 and x = a . The wavelength of this standing wave is realated to the linear momentum p of the particle according to the de Breogile relation. The energy of the particl e of mass m is reelated to its linear momentum as E = (p^(2))/(2m) . Thus, the energy of the particle can be denoted by a quantum number 'n' taking values 1,2,3,"......." ( n=1 , called the ground state) corresponding to the number of loop in the standing wave. Use the model decribed above to answer the following three questions for a particle moving in the line x = 0 to x =a . Take h = 6.6 xx 10^(-34) J s and e = 1.6 xx 10^(-19) C . The allowed energy for the particle for a particular value of n is proportional to

When a particle is restricted to move aong x axis between x =0 and x = a , where a is of nanometer dimension. Its energy can take only certain specific values. The allowed energies of the particle moving in such a restricted region, correspond to the formation of standing waves with nodes at its ends x = 0 and x = a . The wavelength of this standing wave is realated to the linear momentum p of the particle according to the de Breogile relation. The energy of the particl e of mass m is reelated to its linear momentum as E = (p^(2))/(2m) . Thus, the energy of the particle can be denoted by a quantum number 'n' taking values 1,2,3,"......." ( n=1 , called the ground state) corresponding to the number of loop in the standing wave. Use the model decribed above to answer the following three questions for a particle moving in the line x = 0 to x =a . Take h = 6.6 xx 10^(-34) J s and e = 1.6 xx 10^(-19) C . The speed of the particle, that can take disrete values, is proportional to

What is the energy in joules requried to shift the electron of the hydrogen atom from the first Bohr orbit to the fifth bohr orbit and what is the wavelength of the light emitted when the electron returns to the ground state ? The ground state electron energy is 2.18 xx 10^(1) ergs

An imaginary particle has a charge equal to that of an electron and mass 100 times the mass of the electron. It moves in a circular orbit around a nucleus of charge + 4 e . Take the mass of the nucleus to be infinite. Assuming that the Bhor model is applicable to this system. using an expression for the radius of n^(th) Bhor orbit. Find the wavelength of the radiation emitted when the particle jumps from fourth orbit to the second orbit.

The electron in a hydrogen atom makes a transition n_(1) rarr n_(2) where n_(1) and n_(2) are the principal qunatum numbers of the two states. Assume the Bohr model to be valid. The frequency of orbital motion of the electron in the initial state is 1//27 of that in the final state. The possible values of n_(1) and n_(2) are

HC VERMA-BOHR'S MODEL AND PHYSICS OF THE ATOM-Worked Out Examples
  1. Find the radius of Li^(++) ions in its ground state assuming Bohr 's m...

    Text Solution

    |

  2. A particular hydrogen like rediation of frequency 2.467 xx 10^(15)Hs w...

    Text Solution

    |

  3. Calculate the two highest wavelength of the radiation emitted when hyd...

    Text Solution

    |

  4. What is the wavelength of the radiation emitted to the electron in a h...

    Text Solution

    |

  5. (a)Find the wavelength of the radiation required to excited the electr...

    Text Solution

    |

  6. Find the wavelength present in the radiation emitted when hydrogen ato...

    Text Solution

    |

  7. How many different wavelength may be observed in the spectrum from a h...

    Text Solution

    |

  8. Monnohramatic radition of wavelength lambda is incident on a hydrogen ...

    Text Solution

    |

  9. The energy needed to detach the electron of a hydrogen like ion in gro...

    Text Solution

    |

  10. A hydrogen sample is prepared in a particular excited state A photon o...

    Text Solution

    |

  11. (a) Find the maximum wavelength lambda90) of light which can ionize a ...

    Text Solution

    |

  12. Derive an expression for the magnetic field at the site of the neclea...

    Text Solution

    |

  13. A lithioum atom has electron Assume the following simple picture of th...

    Text Solution

    |

  14. A particle known as mu mean has a charge equal to that of no electron ...

    Text Solution

    |

  15. Find the wavelength in a hydrogen spectirm between the range 500nm to ...

    Text Solution

    |

  16. A beem of ultraviolet radius hacking wavelength between 100nm and 200n...

    Text Solution

    |

  17. A neutron moving with a speed 'v' makes a head on collision with a sta...

    Text Solution

    |

  18. Light corresponding in the transition n = 4 to n = 2 in hydrogen atoms...

    Text Solution

    |

  19. A small particle of mass m move in such a way the potential energy U =...

    Text Solution

    |