Two Planes of Atoms in a Crystal Are Separated by 3.25

question 59

Multiple Choice

Two planes of atoms in a crystal are separated by 3.25 × 10^-10 m. How many maxima will there be in the diffraction pattern for x-rays of wavelength 2.0 × 10^-10 m scattered from this crystal?

• A) 4
• B) 2
• C) 3
• D) an infinite number
• E) 1

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Definitions:

Micelle

An aggregate of surfactant molecules dispersed in a liquid colloid, forming a molecular assembly that can solubilize hydrophobic molecules in its hydrophobic core.

Hydrophobic

Characteristic of molecules or substances that do not readily mix with water.

Hydrophilic

Describes molecules or substances that are attracted to water and dissolve well in it.

Linoleic Acid

An essential polyunsaturated fatty acid belonging to the omega-6 fatty acid family, necessary for human health but cannot be synthesized by the human body.