Which one of the following is not true at room temperature and pressure?

P_{4} O_{10}

is a white solid

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{S O}_{2}

is a colourless gas

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{S O}_{3}

is a colourless gas

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{N O}_{2}

is brown gas

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Solution

The correct option is A ${S O}_{3}$ is a colourless gas
At room temperature ${S O}_{3}$ is a solid and exists as either $α - {S O}_{3}$ , $β - {S O}_{3}$ or $γ - {S O}_{3}$ have similar chains cross linked into sheets.

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Which one of the following is not true at room temperature and pressure?

The correct option is A SO3 is a colourless gasAt room temperature SO3 is a solid and exists as either α−SO3, β−SO3 or γ−SO3 have similar chains cross linked into sheets.

The correct option is A ${S O}_{3}$ is a colourless gas
At room temperature ${S O}_{3}$ is a solid and exists as either $α - {S O}_{3}$ , $β - {S O}_{3}$ or $γ - {S O}_{3}$ have similar chains cross linked into sheets.