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Which one of the following is an oxide ?...

Which one of the following is an oxide ?

A

`KO_(2)`

B

`BaO_(2)`

C

`SiO_(2)`

D

`CsO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
In alkaline earth metals, ionic size increases down the group. The lattice energy remains constant because sulphate ion is so large, so that small change in cationic size does not make any difference. On moving down the group the degree of hydration of metal ions decreases very much leading to decrease in solubility.
`therefore" "BeSO_(4)gt MgSO_(4) gt CaSO_(4) gt SrSO_(4) gt BaSO_(4)`
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DISHA PUBLICATION-THE s-BLOCK ELEMENTS-Exercise - 2 : Concept Applicator
  1. Which one of the following is an oxide ?

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  2. A sodium salt on treatment with MgCl(2) gives white precipitate only o...

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  3. A well known reagent which contains copper sulphate, sodium potassium ...

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  4. Select the correct statements : I. Cs^(+) is more highly hydrated th...

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  5. Which of the following acts as an oxidising as well as reducing agent ...

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  6. How many of the following orders are correct : (i) LiOH gt NaOH gt ...

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  7. Identify the correct statement

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  8. Sodium sulphate is soluble in water,whereas barium sulphate is sparing...

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  9. Sodium cannot be extracted by the electrolysis of brine solution becau...

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  10. The raw materials of the Solvay precess are

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  11. The ease of adsorption of the hydrated alkali metal ions on ion-exchan...

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  12. The spectrum of He is expected to be similar to that of

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  13. Polyphosphates are used for softening agents because they

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  14. Which property of sodium is being used in street lights ?

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  15. KO(2)+CO(2)+H(2)O overset("more "CO(2))rarr [X]+[Y] Products [X] and...

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  16. Which of the following matals is sensitive to a wide range of photons ...

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  17. Amongst LiCl, RbCl, BeCl2 and MgCl2, the compounds whith the greatrest...

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  18. Which one of the following has minimum value of cation/anion ratio ?

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  19. Which of the following statement is false?

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  20. The following compounds have been arranged in order of their increasin...

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  21. Which of the following is/are correct for basic strength:

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