The Existence of Discrete (Quantized)energy Levels in an Atom May

question 41

Multiple Choice

The existence of discrete (quantized) energy levels in an atom may be inferred from:

• A)diffraction of electrons by crystals
• B)X-ray diffraction by crystals
• C)atomic line spectra
• D)experiments on the photoelectric effect
• E)visible spectrum

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Definitions:

Sucrose

A sweet substance made from glucose and fructose, familiarly referred to as the sugar found in sugar bowls.

Monosaccharides

Simple sugars that are the most basic units of carbohydrates, with a single polyhydroxy aldehyde or ketone unit.

Kiliani-Fischer Chain Lengthening

A chemical reaction that increases the carbon chain length of aldoses by one carbon atom using cyanohydrin formation.

Optical Activity

The ability of a compound to rotate the plane of polarized light, indicating its chiral nature.