Home
Class 11
CHEMISTRY
The ionisation energy of sodium is '494....

The ionisation energy of sodium is '494.7 kJ' mol '^(-1)'. Calculate the wavelength of the electromagnetic radiation which is just sufficient to ionise the sodium atom. [Given: '.C=3 x 10^8 ms^(-1), h=6.6 x 10^(-34) Js, N_A=6.02 x 10^(23) mol^(-1)]'

Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER

    V PUBLICATION|Exercise QUESTION BANK|97 Videos

  • THE p - BLOCK ELEMENTS

    V PUBLICATION|Exercise QUESTION BANK|107 Videos

Similar Questions

Explore conceptually related problems

Electromagnetic radiation of wavelength 242 nm is just sufficient to ionise the sodium atom. Calculate the ionisation energy of sodium in kJ mol^(-1)

Calculate the energy of radiation emitted for the electronic transition from infinity to ground state for hydrogen atom. Given c = 3xx10^(8)" ms"^(-1), R_(H) = 1.09678 xx 10^(7) m^(-1), h = 6.6256 xx 10^(-34)" J s"^(-1)

Ionization energy of gaseous Na atoms is 495.5" kJ mol"^(-1) . The lowest possible frequency of light that ionizes sodium atom is (h=6.626 xx 10^(-34) J s, N_(A) = 6.022 xx 10^(23)" mol"^(-1))

Calculate the wavelength (in nanometer) associated with a proton moving at 1.0xx10^(3) ms^(-1)s (mass of proton = 1.67 xx 10^(-27) kg and h = 6.63 xx 10^(-34) Js)

What is the wavelength of an electron if its kinetic energy is '4.55 xx 10^(-25)' Joules? (Mass of electron '=9.1 xx 10^(-31) kg' and 'h=6.6 xx 10^(-34) kgm^2 s^(-1)' )

Calculate the wave length of an electron that has been accelerated in a particle accelerator through a potential difference of 100 million yolts. '(1 e V=1.6 xx 10^(-19)J, m_e.' '.=9.1 xx 10^(-31) kg, h=6.6 xx 10^(-34) Js, C=3.0 xx 10^8 ms^(-1))'

The ionization enthalpy of hydrogen atoms is 1.312xx10^(6) J" mol"^(-1) The energy required to excite the electron the atom from n =1 to n=2 is :

V PUBLICATION-STRUCTURE OF ATOM-QUESTION BANK
  1. The quantized energy of an electron in hydrogen atom for the n^(th) it...

    Text Solution

    |

  2. The sodium flame test has a characteristic yellow colour due to emissi...

    Text Solution

    |

  3. The ionisation energy of sodium is '494.7 kJ' mol '^(-1)'. Calculate t...

    Text Solution

    |

  4. An electron is moving with kinetic energy of '2.275 xx 10^(-25) J .' C...

    Text Solution

    |

  5. What is the wavelength of an electron if its kinetic energy is '4.55 x...

    Text Solution

    |

  6. Electrons with wavelength '12 pm' are used for electron diffraction. W...

    Text Solution

    |

  7. A radiation has a frequency of '6 xx 10^(14)' cycles per second (or 'H...

    Text Solution

    |

  8. Calculate the energy of a radiation having a wavelength of '4000 A (h=...

    Text Solution

    |

  9. Calculate the wavelength of the first and the last line in the Balmer ...

    Text Solution

    |

  10. Calculate the uncertainty in momentum of an electron if uncertainty in...

    Text Solution

    |

  11. Find (i) the total number and (ii) the total mass of neutrons in 7 mg ...

    Text Solution

    |

  12. A neutral atom possesses 92 protons and 146 neutrons. Find its atomic ...

    Text Solution

    |

  13. A photon of wave length 400 nm strikes a metal surface. The electrons ...

    Text Solution

    |

  14. Nitrogen has the electronic configuration '1 s^2 2 s^2 px^1 2 py^1 2 p...

    Text Solution

    |

  15. The correct set of quantum numbers for the unparied electron of 'Cl' a...

    Text Solution

    |

  16. Which of the following represents a correct set of quantum numbers of ...

    Text Solution

    |

  17. An electron has a speed of '600 m / s' with an accuracy of '0.005 % .'...

    Text Solution

    |

  18. The númber of nodal planes '5d' orbital has, is

    Text Solution

    |

  19. The total number of orbitals in a shell having principal quantum numbe...

    Text Solution

    |

  20. Which of the following has maximum number of unpaired electrons?

    Text Solution

    |