UPSC Combined Geo-Scientist, Mains · 2016 · Mains Paper II
Q13(b). Electronic transition in a box
Question
Calculate the wavelength absorbed when an electron in a 1×10⁻⁹ m box changes quantum number from 1 to 2. Identify the spectral region.
Answer in brief
λ=1.10×10⁻⁶ m≈1099 nm, in the near-infrared.
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CoversElectronic transition in a boxQuantum mechanics
All parts of Question 13
- 13(a)(i) Rotational constant2 marks
- 13(a)(ii) Higher rotational transition2 marks
- 13(a)(iii) Information for bond length2 marks
- 13(b) Electronic transition in a box7 marks
- 13(c) Diene concentration7 marks