Chemistry - PERIODIC TABLE Question with Solution | TestHub
Given below are two statements:
Statement I: The number of pairs among [Al₂O₃, Cr₂O₃], [Cl₂O₇, Mn₂O₇], [Na₂O, V₂O₃], and [CO, N₂O] that contains oxides of the same nature (acidic, basic, neutral, or amphoteric) is 4.
Statement II: Among Na₂O, Al₂O₃, CO, and Cl₂O₇, the most basic and acidic oxides are Na₂O and Cl₂O₇, respectively.
In the light of the above statements, choose the correct answer from the options given below:
Options:
Answer:
Solution:
The correct option is (A) Both Statement-I and Statement-II are true.
Explanation
Statement-I: There are 4 pairs of oxides with the same nature: [Al₂O₃, Cr₂O₃] (both amphoteric), [Cl₂O₇, Mn₂O₇] (both acidic), [Na₂O, V₂O₃] (both basic), and [CO, N₂O] (both neutral).
Statement-II: Across a period, basicity decreases and acidity increases. Na₂O (alkali metal oxide) is strongly basic, while Cl₂O₇ (highest oxidation state of a non-metal) is strongly acidic. Al₂O₃ is amphoteric and CO is neutral, falling in between.