The correct order of acidic character of oxides in third period of periodic table is

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SiO2 < P4O10 < SO3 < Cl2O7

Cl2O7 < SO3 < P4O10 < SiO2

SO3 < Cl2O7 < P4O10 < SiO2

SiO2 < Cl2O7 < P4O10 < SO3

answer is A.

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Detailed Solution

Acidic character of oxides increases as we move from left to right in a period and depends upon oxidation state of central element.

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