TS EAMCET · Chemistry · Classification of Elements and Periodicity in Properties

The correct order of decreasing acidic nature of oxides

A ${Li}_{2} O > BeO > {CO}_{2} > B_{2} O_{3} > N_{2} O_{3}$
B ${CO}_{2} > N_{2} O_{3} > B_{2} O_{3} > {Li}_{2} O > BeO$
C ${CO}_{2} > BeO > {Li}_{2} O > B_{2} O_{3} > N_{2} O_{3}$
D $N_{2} O_{3} > {CO}_{2} > B_{2} O_{3} > BeO > {Li}_{2} O$

Verified Solution

Answer & Solution

Correct Answer

(D) $N_{2} O_{3} > {CO}_{2} > B_{2} O_{3} > BeO > {Li}_{2} O$

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Detailed explanation

A binary compound of oxygen with another element is called oxide Oxides can be simple (e.g., MgO, Al2O3 ) or mixed (Pb3O4 ,Fe3O4 ). Simple oxides can be classified on the basis of their acidic, basic or amphoteric character. An oxide that combines with water to give an acid is…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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