The Absorption Lines in the Infrared Portion of the Spectrum

question 150

Multiple Choice

The absorption lines in the infrared portion of the spectrum of a star that are produced by hydrogen are from the

• A)Lyman series.
• B)Balmer series.
• C)Paschen series.
• D)isotopes of hydrogen.
• E)ions of hydrogen.

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Definitions:

Alkene

Hydrocarbons that are not fully saturated, characterized by having one double bond between carbon atoms, and follow the formula CnH2n.

Geometric Isomerism

Form of stereoisomerism in which molecules with the same structural formula but different spatial orientations of substituents around a double bond or ring structure are described.

Alkenes

Hydrocarbons that contain at least one carbon-carbon double bond, part of the unsaturated compounds class, which are involved in a variety of chemical reactions.

4-Ethylhept-1-Ene

A hydrocarbon molecule, which is an example of an alkene with a seven-carbon chain and an ethyl group at the fourth carbon.