One Fairly Crude Method of Determining the Size of a Molecule

question 28

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,h = 6.626 × 10^-34 J ∙ s,
M_el = 9.11 × 10^-31 kg)

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

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Definitions:

Short Run

A time period in economics during which at least one input in the production process is fixed, affecting production capabilities.

Price of Capital

The cost of using capital assets to produce goods or services, often expressed in terms of interest rates or rental rates on capital equipment.

Total Cost

The complete expenditure incurred by a firm in the production of goods or services, including both fixed and variable costs.

Production Technique

Methods and processes used in the conversion of inputs into outputs in the production of goods or services.