One Fairly Crude Method of Determining the Size of a Molecule

question 11

Multiple Choice

One fairly crude method of determining the size of a molecule is to treat the molecule as an infinite square well (a box) with an electron trapped inside,and to measure the wavelengths of emitted photons.If the photon emitted during the n = 2 to n = 1 transition has wavelength 1940 nm,what is the width of the molecule? (c = 3.00 × 10⁸ m/s, ,

• A) 1.33 nm
• B) 1.12 nm
• C) 1.21 nm
• D) 1.45 nm

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