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NEET levelSingle correct optionDifficulty 1 of 3cb021

Which of the following species is linear?

A\ce{H2O}
B\ce{NO2-}
C\ce{SO2}
D\ce{CO2}

Answer: D

CO X_{2}

has two bond pairs and no lone pair on carbon, so it is linear.

H X_{2} O

,

SO X_{2}

and

NO X_{2} X^{-}

have lone pairs on the central atom and are bent.

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