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All alkali metal peroxides contain the [...

All alkali metal peroxides contain the `[-O-O]^(2-)` ion. They are

A

diamagnetic and are colored compounds

B

paramagnetic and are colored compounds

C

paramagnetic and are oxidizing agents

D

diamagnetic and are oxidizing agents

Text Solution

Verified by Experts

The correct Answer is:
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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R SHARMA-THE S BLOCK ELEMENTS-Follow-up Test 4
  1. Which of the following is correct for monoxides (normal oxides) of alk...

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  2. On combustion in excess ofd air, lithium forms

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  3. Which of the following in incorrect for the hydroxides of alkali metal...

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  4. All alkali metal peroxides contain the [-O-O]^(2-) ion. They are

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  7. Alkali metal halides have high negative enthalpies of formation. The D...

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  8. The magnitude of enthalphy of formation of alkali metal halides decrea...

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  16. Which of the following alkali metal carbonates doesnot existin the sol...

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