JEE Main 2026 — Classification of Elements and Periodicity in Properties Question with Solution

Statement I:
$A{l}_2{O}_3$ and $C{r}_2{O}_3$ are both amphoteric oxides.
$C{l}_2{O}_7$ and $M{n}_2{O}_7$ are both acidic oxides.
$N{a}_{2}O$ and $V_2{O}_3$ are both basic oxides.
$CO$ and $N_{2}O$ are both neutral oxides.
All $4$ pairs contain oxides of the same nature. Hence, Statement I is true.

Statement II:
$N{a}_{2}O$ is a strongly basic oxide.
$A{l}_2{O}_3$ is an amphoteric oxide.
$CO$ is a neutral oxide.
$C{l}_2{O}_7$ is a strongly acidic oxide.
Thus, the most basic oxide is $N{a}_{2}O$ and the most acidic oxide is $C{l}_2{O}_7$. Hence, Statement II is true.

Both Statement I and Statement II are true.

Answer: Both Statement I and Statement II are true