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JEE Mains · Chemistry · STD 11 - 2. structure of atom

\(300\,nm\) तरंगदैर्ध्य वाले विकिरण के एक मोल फोटोन की \(..........kJ\,mol^{-1}\) ऊर्जा है- (दिया है : \(h =6.63 \times 10^{-34} Js\), \(\left. N _{ A }=6.02 \times 10^{23} mol ^{-1}, c =3 \times 10^8 ms ^{-1}\right)\)

  1. A \(235\)
  2. B \(325\)
  3. C \(399\)
  4. D \(435\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(399\)

Step-by-step Solution

Detailed explanation

Energy of one mole of photons \(=\frac{ hc }{\lambda} \times N _{ A }\) \(\frac{6.63 \times 10^{-34} \times 3 \times 10^{8}}{300 \times 10^{-9}} \times 6.02 \times 10^{23}\) \(=399.13 \times 10^{3} \,Joule / mole\) \(=399\, kJ / mole\)
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