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Bond dissociation on energy of C l 2 is 240 k J / m o l . The longest wavelength of photon that can break this bond would be N A = 6 × 10 23 , h = 6.6 × 10 - 34 J / s

Options

  1. A4.95 × 10 - 7 m
  2. B9.9 × 10 - 7 m
  3. C4.95 × 10 - 6 m
  4. D9.9 × 10 - 6 m

Correct answer

A. 4.95 × 10 - 7 m

Step-by-step solution

E = N A × h C λ 240 × 10 3 = 6 × 10 23 × 6 ⋅ 6 × 10 - 34 × 3 × 10 8 λ λ = 4.95 × 10 - 7 m

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