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Which of the following is radioactive al...

Which of the following is radioactive alkali metal ?

A

Fr

B

Ra

C

At

D

Rn

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The correct Answer is:
A
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MODERN PUBLICATION-CHEMISTRY OF s-BLOCK ELEMENTS-MULTIPLE CHOICE QUESTIONS (LEVEL-II)
  1. Which of the following statements is true about Ca(OH)(2) ?

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  2. The mixture of MgCl(2)andMgO is called

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  3. Which of the following is radioactive alkali metal ?

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

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  5. The alkaline earth metal which imparts apple green colour to bunsen fl...

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  6. Which two of the following salts are used for preparing iodized salt? ...

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  7. Which of the following is formed by the action of water on Na(2)O(2)?

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  8. Which one of the following processes is used for the manufacture of ca...

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  9. RbO(2) is

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  10. Which of the following on thermal decomposition yields a basic as well...

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  11. The alkali metals form salts like hydrides by the direct synthesis at ...

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  12. Which of the following metals has the largest abundance in the earth's...

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  13. Propertyof alkaline earthmetals that increases with their atomic numbe...

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  14. Which of the following alkaline earth metal sulphates has hydration en...

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  15. The increasing order of the density of alkali metals

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  16. Which of the following oxides is not expected to react with sodium hyd...

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  17. The correct order of reducing character of alkali metals is

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  18. Which one of the following on hydrolysis, gives the corresponding meta...

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  19. Which one of the following order presents the correct sequence of the ...

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  20. The product obtained on heating LiNO(3) will be

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