The Most Common Molecule in a Molecular Cloud Is

question 63

Multiple Choice

The most common molecule in a molecular cloud is:

• A) methane, CH₄.
• B) molecular hydrogen, H₂.
• C) carbon monoxide, CO.
• D) water, H₂O.
• E) ammonia, NH₃.

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Definitions:

Aromatic Ring

A cyclic (ring-shaped) group of atoms that exhibits stability due to the delocalization of pi electrons across all the ring atoms, common in many organic compounds.

O,p-director

Groups in aromatic chemistry that direct electrophilic substitution reactions to the ortho and para positions.

Mechanism

A detailed description of the step-by-step process by which chemical reactions occur, including the breaking and forming of bonds.

Aromatic Ring

A stable ring-shaped molecule made up of alternating single and double bonds, common in many organic compounds.