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The energy of one mole of photons of radiation of wavelength 300nm is (Given: h = 6.63 × 1034 Js,NA = 6.02 × 1023 mol-1 c = 3 × 108 ms-1)

Option 1 -

235 kJ mol-1

Option 2 -

325 kJ mol-1

Option 3 -

399 kJ mol-1

Option 4 -

435 kJ mol-1

0 2 Views | Posted 3 months ago
Asked by Shiksha User

  • 1 Answer

  • A

    Answered by

    alok kumar singh | Contributor-Level 10

    3 months ago
    Correct Option - 3


    Detailed Solution:

    Energy of 1 photon =  h c λ

    Energy of 1 mole of photon = N A × h c λ

    = 6 . 0 2 2 × 1 0 2 3 × 6 . 6 3 × 1 0 − 3 4 × 3 × 1 0 8 3 0 0 × 1 0 − 9

    = 0.399 × 106 J = 399 KJ

     

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