Home
Class 12
PHYSICS
Energy of an electron in an excited hydr...

Energy of an electron in an excited hydrogen atom is `-3.4eV`. Its angualr momentum will be: `h = 6.626 xx 10^(-34) J-s`.

Text Solution

Verified by Experts

The correct Answer is:
`2.11xx10^(-34)Js`
`E=(-13.6)/(n^(2))=-3.4eV :. n=2`
`:.` Angular momentum of electron
`=(nh)/(2pi)=2h//2pi=h/pi=(6.626xx10^(-34))/3.14`
`2.11xx10^(-34)J-s`
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

The energy of an excited hydrogen atom is -0.85 eV . Find the angular momentum of the electron. (h = 6.63 xx 10^(-34) J.s., pi = 3.142, E_(1) = -13.6 eV)

The energy of an electron in an excited hydrogen atom is - 3.4 e V . Calculate the angular momentum . Given : Rydbrg's R = 1.09737 xx 10^(-7) m^(-1) . Plank's constant h = 6.626176 xx 10^(-34) J - s , speed of light c = 3 xx 10^(8) m s^(-1).

The energy of electron in an excited hydrogen atom is -3.4eV . Its angular momentum according to bohr's theory will be

The energy of an excited hydrogen atom is 0.38 eV. Its angular momentum is n . h/(2pi) . Find n

The energy of an excited H-atom is -3.4eV . Calculate angular momentum of e^(-)

The energy of an electron in excited hydrogen atom is -3.4 eV . Then, according to Bohr's therory, the angular momentum of the electron of the electron is

The energy of hydrogen atom in excited state is -3.4 eV. The angular momentum of electron is

The energy of electron in first excited state of H -atom is -3.4 eV its kinetic energy is

PRADEEP-ATOMS AND NUCLEI-Exercise
  1. Calculate the wavelength of photon emitted when an electron jumps form...

    Text Solution

    |

  2. The ionisation energy of hydrogen atom is 13.6 eV. Calculate Rydberg's...

    Text Solution

    |

  3. Energy of an electron in an excited hydrogen atom is -3.4eV. Its angua...

    Text Solution

    |

  4. A hydrogen atom initially in the ground level absorbs a photon, Which ...

    Text Solution

    |

  5. A 12.9 eV beam of electrons is used to bombard gaseous hydrogen atom a...

    Text Solution

    |

  6. Fig. shows energy level diagram of hydrogen atom. Find out the transit...

    Text Solution

    |

  7. A hydrogen atom rises form its n=1 state to the n=4 state by absorbing...

    Text Solution

    |

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

    Text Solution

    |

  9. Which state of the triply ionized Be^(+++) has the same orbital radius...

    Text Solution

    |

  10. What is the relation between decay constant and half life of a radio a...

    Text Solution

    |

  11. 1curei=k disintegrations/sec, where k is

    Text Solution

    |

  12. Which of the following is in the increasing order for penetrating powe...

    Text Solution

    |

  13. Two nuclei have mass number in the ratio 1:8. What is the ratio of the...

    Text Solution

    |

  14. A nucleus .nX^M emits one alpha particle and one beta-particle. What a...

    Text Solution

    |

  15. Select the pairs of isobars and isotones form the following nuclei .6C...

    Text Solution

    |

  16. Calculate the energy equivalent of 1 a.m.u. in MeV

    Text Solution

    |

  17. One electron volt is the...........when accelerated through a............

    Text Solution

    |

  18. Isotopes of an element are the atoms ........... which have..............

    Text Solution

    |

  19. Isobars are atoms of..........Which have same............... But diffe...

    Text Solution

    |

  20. Isotones are the nuclides which contain............ .

    Text Solution

    |