Home
Class 12
CHEMISTRY
The energy of a photon is given as: Delt...

The energy of a photon is given as: `DeltaE//"atom"=3.03xx10^(-19)J"atom"^(-1)`. The wavelength `(lamda)` of its photon is

A

65.6 nm

B

656nm

C

0.565nm

D

6.56nm

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaE=hv=(hc)/(lamda)`
or `lamda=(hc)/(DeltaE)=((6.636xx10^(-34)Js)xx(3.0xx10^(8)))/(3.03xx10^(-10))`
`=6.65xx10^(-7)m=656m`
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS (LEVEL III)|10 Videos

  • STRUCTURE OF ATOM

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|11 Videos

  • STRUCTURE OF ATOM

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|11 Videos

  • STATES OF MATTER

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|12 Videos

  • SURFACE CHEMISTRY

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|15 Videos

Similar Questions

Explore conceptually related problems

Calculate the energy of a photon whose wavelength is 3.864xx 10^(-7) m.

In a photoelectric effect, the energy of the photon striking a metallic surface is 5.6xx10^(-19)J . The kinetic energy of the ejected electron is 12.0xx10^(-20)J . The work function is

The energy of photon of reddish light having wavelength 660nm is ( h=6.6xx10^(-34)Js )

MODERN PUBLICATION-STRUCTURE OF ATOM-MULTIPLE CHOICE QUESTIONS (LEVEL II)
  1. The Bohr orbit radius for the H-atom (Z=1) is approximately 0.53Å. The...

    Text Solution

    |

  2. Who modified Bohr's theory for introducing elliptical orbits for elect...

    Text Solution

    |

  3. The energy of a photon is given as: DeltaE//"atom"=3.03xx10^(-19)J"ato...

    Text Solution

    |

  4. In hydrogen atom, energy of first excited state is-3.4eV. The K.E. of...

    Text Solution

    |

  5. The frequency of radiation emitted when the electron falls from n=4 to...

    Text Solution

    |

  6. An element X has the following isotopic composition . ""^(200)X=90%,...

    Text Solution

    |

  7. The electrons identified by quantum numbers n and l, (i) n=3,l=0 ...

    Text Solution

    |

  8. A metal surface ejects electrons when hit by blue light but not when h...

    Text Solution

    |

  9. Out of the first 80 elements,the number of elements having 3d orbitals...

    Text Solution

    |

  10. The de Broglie wavelength of electron in second Bohr orbit is exactly ...

    Text Solution

    |

  11. The number of photons emitted per second by a 60 watt source of monoch...

    Text Solution

    |

  12. The energies E(1) and E(2)of two radiations are 25 eV and 50 eV respec...

    Text Solution

    |

  13. If ratio of the 1st three Bohr orbits in H is 1:4:9, then the ratio of...

    Text Solution

    |

  14. The element with electronic configuration of its atom 1s^(2)2s^(2)2p^(...

    Text Solution

    |

  15. Which of the following options does not represent ground state electro...

    Text Solution

    |

  16. Number of angular nodes for 4 d orbital is

    Text Solution

    |

  17. Total number of orbitals associated with third shell will be

    Text Solution

    |

  18. The pair of ions having same electronic configuration is

    Text Solution

    |

  19. Which of the following orbitals does not make sense?

    Text Solution

    |

  20. Which of the following make up an isotonic traid?

    Text Solution

    |