Select the correct order of acidic nature.

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$CO > {CO}_{2}$

${SiO}_{2} < {CO}_{2}$

${NO}_{2} > N_{2} O_{5}$

${SO}_{2} > {SO}_{3}$

answer is B.

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Detailed Solution

Due to an increase in metallic character as we advance down the group, ${CO}_{2}$ is more acidic than ${SiO}_{2}$ . Thus, the correct order is, ${SiO}_{2} < {CO}_{2}$ .

Hence correct option is B.

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