The formula of nitrous oxide is:

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$N_{2} O$

$NO$

${NO}_{2}$

$N_{2} O_{3}$

answer is A.

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Detailed Solution

The nitrogen atom combines with oxygen in different ratio to produce different nitrogen oxides.

These oxides are:

The term "laughing gas" refers to a colorless, non-flammable gas. At higher temperatures, it can behave as an extremely potent oxidizing agent similar to molecular hydrogen. It can be used as a sedative by dentists and other medical professionals during procedures. It also has analgesic properties. This substance is a potent oxidant at higher temperatures yet is insoluble in water. It appears as a colorless gas and has a faintly sweet scent. A small amount of it inhaled results in joy and bliss. It is the most popular inhaled anesthetic in the world because it provides immediate pain relief. At greater doses, it can have narcotic effects and cause suffocation death.

Hence, the correct formula for nitrous oxide is $N_{2} O$ .

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