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JEE Main202330 Jan 2023Morning ShiftChemistryStructure of AtomActual

The energy of one mole of photons of radiation of frequency 2 × 10 12 Hz in Jmol - 1 is _____ . (Nearest integer) (Given: h = 6 . 626 × 10 - 34 Js N A = 6 . 022 × 10 23 mol - 1 )

Correct answer

0

Step-by-step solution

For one photon, from Planck's equation, E = hv For one mole photon, ⇒ E = 6 · 023 × 10 23 × 6 · 626 × 10 - 34 × 2 × 10 12 = 798 · 16   J ≈ 798   J

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