Atoms in a Hot,low-Density Gas (E

question 117

Multiple Choice

Atoms in a hot,low-density gas (e.g. ,in a laboratory-type spectral source) emit a spectrum that is

• A) a series of specific colors at the same wavelengths,independent of the type of atom excited.
• B) a series of specific colors,whose positions change as the gas temperature changes.
• C) continuous over all visible wavelengths,with maximum intensity in the blue.
• D) a series of specific colors,unique to the type of atom in the tube,but fixed in position even when the gas temperature changes.

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