UPSC Combined Geo-Scientist, Mains · 2024 · Mains Paper II
Q14(c). Wavelength of the (2,2,2)–(1,2,3) transition
Question
What will be the wavelength of the radiation absorbed/emitted when an electron makes a transition between these two energy levels? In what region of the electromagnetic spectrum does this transition lie?
Answer in brief
λ = 412 nm, in the visible region (violet end).
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Coversparticle in a box transitionwavelengthΔE = hc/λelectromagnetic spectrumvisible region
All parts of Question 14
- 14(a) Non-degenerate and six-fold levels in a cubic box5 marks
- 14(b) Energies of the two levels for a 0.5 nm box5 marks
- 14(c) Wavelength of the (2,2,2)–(1,2,3) transition5 marks
- 14(d) Quantum efficiency in the uranyl oxalate actinometer5 marks