Home
Class 11
CHEMISTRY
Calculate (i) the frequency of radiati...

Calculate
(i) the frequency of radiation when `lambda= 2.5 mu,`
(ii) the wavelength of radiation when v =1368 k Hz,
(iii) the wave number of radiation when `lambda=460 nm,`
(iv) the energy of radiation when `barv=4.0 xx 10^5 m^(-1)`.

Text Solution

Verified by Experts

The correct Answer is:
(i) `1.2 xx 10^(14) s^(-1), (ii) 219.3m, (iii) 2.17 xx 10^6m^(-1) (iv) 7.9 xx 10^(-20)`
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    ICSE|Exercise Very Short Answer Type Questions|30 Videos

  • STRUCTURE OF ATOM

    ICSE|Exercise Short Answer Type Questions|30 Videos

  • STRUCTURE OF ATOM

    ICSE|Exercise NCERT Textbook Exercises|67 Videos

  • STATES OF MATTER : GASES AND LIQUIDS

    ICSE|Exercise NCERT TEXT-BOOK EXERCISES (With Hints and Solutions)|23 Videos

  • THE s - BLOCK ELEMENTS

    ICSE|Exercise NCERT TEXT-BOOK. EXERCISES (WITH HINTS AND SOLUTIONS)|55 Videos

Similar Questions

Explore conceptually related problems

The frequency of a radiation belonging to radio waves is 3 xx 10^(7)Hz . Find the wave number and wavelength of the radiation.

Calculate the wavelength of radiation emitted when He^(+) makes a transtion from the state n = 3 to the state n = 2

A heated body maitained at T K emits thermal radiation of total energy E with a maximum intensity at frequency v. The emissivity of the material is 0.5. If the temperature of the body be increased and maintained at temperature 3T K, then :- (i) The maximum intensity of the emitted radiation will occur at frequency v/3 (ii) The maximum intensity of the emitted radiation will occur at frequency 3v. (iii) The total energy of emitted radiation will become 81 E (iv) The total energy of emitted radiation will become 27 E

Calculate the energy and frequency of the radiation emitted when an electron jumps from n=3 to n=2 in a hydrogen atom.

The wavelength of radiation emitted when in He^(+) electron falls infinity to stationary state would be (R =1.098 xx 10 ^7 m^(-1))

If the frequency of violet radiation is 7.5xx10^14 Hz, then the value of wavenumber in m^(-1) for it is pxx 10^5 . Give the value of p?

Calculate the wavelength of radiation emitted producing a line in the Lyman series ,when as electron falls from fourth stationary in hydrogen atom (R_(H) = 1.1 xx 10^(7)m^(-1)

Calculate the wavelength of radiation emited when an electron in a hydrogen atom makes a transition from an energy level with n = 3 to a level with n= 2

The wavelength of the radiation emitted when an electron falls from Bohr 's orbit 4 to 2 in H atom is

What will be the wavelength of radiation released in nano-metre when an electron drops from the 5th Bohr orbit to 2nd Bohr orbit in hydrogen atom?

ICSE-STRUCTURE OF ATOM-Review Exercises
  1. Calculate the wave number and energy of the spectral line emitted by a...

    Text Solution

    |

  2. In a hydrogen atom, an electron undergoes transition from an energy le...

    Text Solution

    |

  3. Calculate (i) the frequency of radiation when lambda= 2.5 mu, (ii)...

    Text Solution

    |

  4. Explain what is meant by quantisation of energy.

    Text Solution

    |

  5. Which of the following are quantised?

    Text Solution

    |

  6. A hydrogen atom in the ground state. To which level will it get excite...

    Text Solution

    |

  7. Calculate the wavelength of the spectral line when an electron jumps f...

    Text Solution

    |

  8. Calculate the ionisation energy of He^(+) if that of H atom is 13.6eV.

    Text Solution

    |

  9. What nature of electron is indicated by each of the following properti...

    Text Solution

    |

  10. Using Heisenberg's uncertainty principle, calculate the uncertainty in...

    Text Solution

    |

  11. A body of mass 70 kg travels with a speed of 15 km/hour. Calculate the...

    Text Solution

    |

  12. Using s, p, d, f notations describe the orbitals with the following qu...

    Text Solution

    |

  13. Designate the electrons with the following sets of quantum numbers : ...

    Text Solution

    |

  14. STATEMENT-1: An orbital cannot have more then two electrons and they m...

    Text Solution

    |

  15. Explain why can more than 8 electrons not be accommodated in L shell?

    Text Solution

    |

  16. Which of the following sets of quantum numbers do not belong to 2p sub...

    Text Solution

    |

  17. Show the arrangement of electrons by block diagrams in the following s...

    Text Solution

    |

  18. How many electrons possess anticlockwise spin in an atom of oxygen?

    Text Solution

    |

  19. How many electrons are unpaired in (i) He ? (ii) C? (iii) N? (iv) ...

    Text Solution

    |

  20. Why is 4s orbital filled before the filling of 3d orbital?

    Text Solution

    |