Home
Class 12
CHEMISTRY
The atomic masses of He and Ne are 4 an...

The atomic masses of He and Ne are 4 and 20 amu respectively . The value of the de Broglie wavelength of He gas at`-73.^(@)C` is ''M'' times that of the de Broglie wavelength of Ne at `727.^(@)C.` M is

Text Solution

Verified by Experts

The correct Answer is:
5
Equation `15, lamda= (h)/(sqrt(2mE))`
As `E prop T, lamda prop (h)/(sqrt(2mT))`
Promotional Banner

Topper's Solved these Questions

  • ATOMIC STRUCTURE AND RADIOACTIVITY

    RC MUKHERJEE|Exercise Objective Problems|66 Videos

  • ATOMIC STRUCTURE AND RADIOACTIVITY

    RC MUKHERJEE|Exercise Objective Problems|66 Videos

  • ATOMIC WEIGHT

    RC MUKHERJEE|Exercise PROBLEMS |6 Videos

Similar Questions

Explore conceptually related problems

The atomic masses of He and Ne are 4 and 20 a.m.u. respectively. What is the ratio of de Broglie wavelength of Hegas at -73^(@)C compared to that of Ne gas at 727^(@)C ?

The value of the de- Broglie wavelength of He gas at 100K is 5times that of the de- Broglie wavelength gas X ,at 1250K .What is atomic mass of X ?

The de-Broglie wavelength of thermal neutrons at 27^(@) C will be

The de - Broglie wavelength of a neutron at 27 ^(@) C is lambda . What will be its wavelength at 927^(@) C ?

The de Broglie wavelength associated with a neutron at room temperature is 1.5 Å. The de Broglie wavelength of same at 327^@ C will be

The de-Broglie wavelength of an electron in the ground state of the hydrogen atom is

The de-Broglie wavelength of a neutron at 1327^@C is lambda . What will be its wavelength at 127^@C ?

RC MUKHERJEE-ATOMIC STRUCTURE AND RADIOACTIVITY-PROBLEMS (Answers bracketed with questions)
  1. Calculate the number of atoms disintegrating per minute in a mass of 0...

    Text Solution

    |

  2. In a sample of pitchblende the atomic ratio is ""^(206)Pb, ""^(238)U= ...

    Text Solution

    |

  3. A sample of radon emitted initially 7 xx 10^(4) alpha-particles per se...

    Text Solution

    |

  4. ""^(222)Rn has a half-life period of 3.83 days. What fraction of the s...

    Text Solution

    |

  5. The number of alpha-particles emitted per second by 1g of radium is 3....

    Text Solution

    |

  6. The rate of radioactive decomposition corresponding to 3.7 xx 10^(10) ...

    Text Solution

    |

  7. Calculate the weight of ""^(14)C (t((1)/(2)) =5720yr) atoms which will...

    Text Solution

    |

  8. Calculate the number of disintegrations which 1g of ""^(226)Ra (t((1)/...

    Text Solution

    |

  9. A piece of wood was found to have ""^(14)C//^(12)C ratio 0.7 times tha...

    Text Solution

    |

  10. 10.0 gram-atom of an alpha-active radioisotope is disintegrating in a ...

    Text Solution

    |

  11. The disintegration rate for a sample containing ""(27)^(60)Co as the o...

    Text Solution

    |

  12. Sample containing ""(88)^(234)Ra, which decays by alpha-particle emiss...

    Text Solution

    |

  13. The thorium radioactive decay series produced one atom of ""^(208)Pb a...

    Text Solution

    |

  14. The ratio of the number of atoms of two radioactive elements A and B, ...

    Text Solution

    |

  15. Which nucleus has higher binding energy per nucleon: ""(28)^(58)Ni (57...

    Text Solution

    |

  16. For ""(92)^(238)U the binding energy per nucleon is 7.576 MeV. What is...

    Text Solution

    |

  17. The atomic masses of He and Ne are 4 and 20 amu respectively . The va...

    Text Solution

    |

  18. In an atom, the total number of electrons having quantum numbers n =...

    Text Solution

    |

  19. The periodic table consists of 18 groups. An isotope of Cu, on bombard...

    Text Solution

    |

  20. A closed vessel with rigid walls contains 1 mole of .(92)^(238)U and 1...

    Text Solution

    |