Home
Class 11
PHYSICS
Consider 3rd orbit of He^(+) (Helium) us...

Consider `3rd` orbit of `He^(+)` (Helium) using nonrelativistic approach the speed of electron in this orbit will be (given `K = 9 xx 10^(9)` constant `Z = 2` and `h` (Planck's constant) `= 6.6 xx 10^(-34)Js`.)

A

`1.46 xx 10^(6) m//s`

B

`0.73 xx 10^(6) m//s`

C

`3.0 xx 10^(8) m//s`

D

`2.92 xx 10^(6) m//s`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Give the order of the following : Planck's constant ( 6.63xx10^(-34) J-s)

The de Brogile wavelength of an electron (mass =1 xx 10^(-30) kg, charge = 1.6 xx 10^(-19)C) with a kinetic energy of 200 eV is (Planck's constant = 6.6 xx 10^(-34) Js)

What is the number of significant figures in Avogadro's number (6.0 xx 10^(23)) and Planck's constant (6.62 xx 10^(-34) J s) .

Calculate the speed of the electron in the first Bohr orbit given that h=6.6xx10^(-34) Js, m=9.11xx10^(-31) kg and e=1.603xx10^(-19) C .

The de - Broglie wavelength of a ball of mass 120 g moving at a speed of "20 m s"^(-1) is (Planck's constant h=6.6xx10^(-34)Js )

The speed of the electron in the first orbit is 2.182 xx 10^(6) m//s , the speed of electron in the third orbit is

Uncertainty in position of a particle of 25g in space is 10^(8)m Hence uncertainty in velocity (ms^(-1)) is (Planck's constant h=6.6xx10^(-34)Js )

Uncertainty in position of particle of 25 g in space is 10^(-15) m . Hence , uncertainty in velocity (ms^(-1)) is : (Planck's constant , h = 6.63 xx 10^(-34) Js)

The angular momentum of electron in 3rd Bohr orbit of Hydrogen atom is 3.165 xx 10^(-34)kg m^2 /s. Calculate Plank’s constant h.

DISHA-ATOMS-PHYSICS
  1. In a hydrogen like atom electron make transition from an energy level ...

    Text Solution

    |

  2. The spectrum obtained from a sodium vapour lamp is an example of

    Text Solution

    |

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

    Text Solution

    |

  4. The Bohr model of atoms

    Text Solution

    |

  5. The largest wavelength in the ultraviolet region of the hydrogen spect...

    Text Solution

    |

  6. A doubly ionised Li atom is excited from its ground state(n = 1) to n ...

    Text Solution

    |

  7. In Rutherford scattering experiment, what will b ethe correct angle fo...

    Text Solution

    |

  8. Consider 3rd orbit of He^(+) (Helium) using nonrelativistic approach t...

    Text Solution

    |

  9. The ionisation energy of hydrogen atom is 13.6 eV. Following Bohr's th...

    Text Solution

    |

  10. The transition form the state n = 3 to n = 1 in a hydrogen-like atom r...

    Text Solution

    |

  11. Given the value of Rydberg constant is 10^(7)m^(-1), the waves number ...

    Text Solution

    |

  12. Which of the plots shown in the figure represents speed (vn) of the el...

    Text Solution

    |

  13. The ionisation potential of H-atom is 13.6 eV. When it is excited from...

    Text Solution

    |

  14. If the energy of a hydrogen atom in nth orbit is E(n), then energy in ...

    Text Solution

    |

  15. In the Rutherford experiment, alpha-particles are scattered from a nuc...

    Text Solution

    |

  16. An electron changes its position from orbit n = 4 to the orbit n = 2 o...

    Text Solution

    |

  17. In a Rutherford scattering experiment when a projectile of change Z(1)...

    Text Solution

    |

  18. The wavelength of the first spectral line in the Balmer series of hydr...

    Text Solution

    |

  19. Let v(1) be the frequency of series limit of Lyman series, v(2) the fr...

    Text Solution

    |

  20. In a hypotherical Bohr hydrogen, the mass of the electron is doubled. ...

    Text Solution

    |