Question

An element X occurs in short period having configuration $n{s}^{2}n{p}^1$. The formula and nature of its oxide is

• A. XO₃, basic
• B. XO₃, acidic
• C. X₂O₃, amphoteric
• D. X₂O_3, basic

Answer 1

The correct option is C

X₂O₃, amphoteric

$n{s}^{2}n{p}^1$ is the configuration of III A (B) group elements. They form oxides of type $X_2{O}_3$ , As it belongs to short it should be either B,Al.B forms acidic oxide while Al, forms amphoteric oxides.