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BITSAT 2020

Exam: BITSAT
Year: 2020
Subject: Chemistry
Chapter: Classification of Elements and Periodicity in Properties

BITSAT 2020 · Chemistry · Classification of Elements and Periodicity in Properties

The correct order of acidic strength :

The correct order of acidic strength :

Options

A $\mathrm{Cl}_{2} \mathrm{O}_{7} > \mathrm{SO}_{2} > \mathrm{P}_{4} \mathrm{O}_{10}$
B $\mathrm{K}_{2} \mathrm{O} > \mathrm{CaO} > \mathrm{MgO}$
C $\mathrm{CO}_{2} > \mathrm{N}_{2} \mathrm{O}_{5} > \mathrm{SO}_{3}$
D $\mathrm{Na}_{2} \mathrm{O} > \mathrm{MgO} > \mathrm{Al}_{2} \mathrm{O}_{3}$

Correct answer

A. $\mathrm{Cl}_{2} \mathrm{O}_{7} > \mathrm{SO}_{2} > \mathrm{P}_{4} \mathrm{O}_{10}$

Step-by-step solution

Acidic character of oxide

\propto

Non-metallic nature of element. Non-metallic character increases along the period. Hence order of acidic character is

\mathrm{Cl}_{2} \mathrm{O}_{7} > \mathrm{SO}_{2} > \mathrm{P}_{4} \mathrm{O}_{10}

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