Question:
The energies of energy levels A, B and C are EA < EB < EC. If the radiations of wavelengths ₁, ₂, ₃ are emitted due to transitions C to B, B to A and C to A respectively, then which relation is correct?
The energies of energy levels A, B and C are EA < EB < EC. If the radiations of wavelengths ₁, ₂, ₃ are emitted due to transitions C to B, B to A and C to A respectively, then which relation is correct?
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Energy differences add, not wavelengths.
Updated On: Mar 18, 2026
- ₁ + ₂ = ₃
- ₃ = ₁ + ₂
- ₃ = (₁₂)/(₁+₂)
- ₃⁻¹ = ₁⁻¹ + ₂⁻¹
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The Correct Option is D
Solution and Explanation
Step 1: Energy relations. E = (hc)/(λ)
Step 2: Adding transitions. (hc)/(₃) = (hc)/(₁) + (hc)/(₂)
Step 3: Cancelling constants. ₃⁻¹ = ₁⁻¹ + ₂⁻¹
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