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Basic chemistry (common names): What is laughing gas? Identify the correct oxide of nitrogen known by this common name. Choose the correct compound.

Difficulty: Easy

Nitrous oxide (N2O)
Nitric oxide (NO)
Nitrogen dioxide (NO2)
Sulfur dioxide (SO2)

Correct Answer: Nitrous oxide (N2O)

Explanation:

What is being asked?
The chemical identity of "laughing gas".

Given data

Common name used in anesthesia/dentistry history

Concept/Approach
"Laughing gas" is nitrous oxide (N₂O), a mild anesthetic and analgesic; do not confuse with NO or NO₂.

Final Answer
Nitrous oxide (N₂O)

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