1.

All alkali metal peroxides contain the `[-O-O]^(2-)` ion. They areA. diamagnetic and are colored compoundsB. paramagnetic and are colored compoundsC. paramagnetic and are oxidizing agentsD. diamagnetic and are oxidizing agents

Answer» Correct Answer - D
They are diamagnetic as all the electrons are paired, They act as oxidizing agents because they react with water and acid giving hydrogen peroxide :
`Na_(2)O+2H_(2)O to 2NaOH+H_(2)O_(2)`
They may be regarded as salts of the dibasic acid `H_(2)O_(2)`. They are all colorless compounds except `Na_(2)O_(2)` which is pale yellow in color.
Sodium peroxide is widely used as an oxidizing agent in inorganic chemistry.


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