Which of the following is not a peroxide - Vidyadip

MCQ

Which of the following is not a peroxide

A
$Na_2O_2$
B
$CaO_2$
✓
$PbO_2$
D
$H_2O_2$

✓

Answer

Correct option: C.

$PbO_2$

c
$PbO _2$ are not true peroxide because they do not liberate $H _2 O _2$ on treatment with dilute acids.

Lead $(IV)$ oxide and the lead atom shares its $4$ electrons $2$ each with oxygen atoms. In Peroxide there a bond sharing of two oxygen atoms as in:

Hydrogen Peroxide $H - O - O - H$

Water is an oxide $H - O - H$

Likewise $PbO _2$ is an oxide $P$ b has a valency $4$

$O = Pb = O$

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