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Which of the following oxide having O(2)...

Which of the following oxide having `O_(2)^(-2)` (peroxide) anion:-

A

`Na_(2)O`

B

`BaO_(2)`

C

`RbO_(2)`

D

`KO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`BaO_(2)`
`Ba^(2+) O_(2)^(2-)`
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ALLEN-S-BLOCK ELEMENTS -EXERCISE
  1. Which is having highest m.p-

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  2. When Na and Li placed in dry air we get:-

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  3. Which of the following oxide having O(2)^(-2) (peroxide) anion:-

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  4. Which of the following properties of IA group metals increases as the ...

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  5. The hydride ion H^(-) is stronger base than its hydroxide ion OH^(-). ...

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  6. Which of the following s-block metals do not impart any colour to the ...

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  7. The metal extracted electrolysis of its fused salt is

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  8. Lime stone is:-

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  9. Be(IIA) shows different behaviour as compared to other elements of the...

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  10. Which cannot be used to generate H(2)?

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  11. Only those elements of s-block can produce superoxides which have:-

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  12. In the Down's method for the extraction of sodium, the melting point o...

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  13. Which of the following carbonate will not decompose on heating:-

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  14. The decomposition temperature is maximum for:-

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  15. Metallic magnesium is prepared by-

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  16. Alum is the name used for all double salts having the composition M(2)...

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  17. Which valuable byproduct is obtained in the Down's process for extract...

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  18. Which does not exists in solid state

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  19. Alkali metals dissolve in liquid NH(3) then which of the following obs...

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  20. On passing excess of CO(2) in lime water, its milky appearance disappe...

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