Q16 / 160 · TS EAMCET 2012 · Chemistry

Which one of the following cannot form an amphoteric oxide?

A
$\mathrm{Al}$
B
$\mathrm{Sn}$
C
$\mathrm{Sb}$
Correct answer
D
$\mathrm{P}$

Solution

Phosphorus being a non-metal always forms acidic oxides like $\mathrm{P}_2 \mathrm{O}_3, \mathrm{P}_5 \mathrm{O}_{10}$, etc. $\mathrm{Al}_2 \mathrm{O}_3, \mathrm{SnO}$ and $\mathrm{Sb}_2 \mathrm{O}_3$ are amphoteric oxides i.e., react with acids as well as bases.

Hence, the correct answer is option: 'D'.

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