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Which among Na,K,Cs and Li forms most st...

Which among `Na,K,Cs` and `Li` forms most stable hydride?

A

LiH

B

KH

C

NaH

D

CsH

Text Solution

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The correct Answer is:
A
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Answer the following: a. Which of the following has density greater than water ? Li, Na, K, Cs . b. Arrange K, Li, Rb in other of increasing electrode potential. c. Arrange Na, Li, K and Cs in increasing order of metallic bond. d. Which among Na, K, Cs and Li forms stable hydride ? e. On reacting eith oxygen, potassium can form K_(2)O , KO_(2) and K_(2)O_(2) . Is it correct ? f. Give the name of the hardest alakli metal. g. Arrange the following in order orf increasing polarising albility. Li^(o+), Na^(o+), K^(o+), Cs^(o+) h. Mention some of the properties of alkali metals which increse down the group. i. Mention some of the properties of alkali metals which decrease down the group.

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AAKASH INSTITUTE-THE S-BLOCK ELEMENTS-Assignment (Section-A)
  1. Why lithium is kept wrapped in paraffin wax and not stored in kerosene...

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  2. Which of the following oxides is the most basic in nature?

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  3. Which among Na,K,Cs and Li forms most stable hydride?

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  4. Lithium and magnesium exhibit diagonal relationship because

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

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  6. Sodium carbonate can be manufactured by Solvay's process but potassium...

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  7. Which decomposes on heating-

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  8. Solvay process is used for the manufacture of

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  9. In the manufacture of sodium hydroxide by product obtained is

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  10. Sodium cannot be obtained by the electrolysis of aqueous solution of N...

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  11. Which of the following bicarbonate does not exist in solid state?

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  12. Which of the alkali metals has the polarizing power close to that of M...

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  13. In the preparation of sodium carbonate (Na(2)CO(3)) which of the follo...

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  14. Which of the following halides has the highest melting point-

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  15. The first ionization energies of alkaline earth metal are higher than ...

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  16. The most electronegative alkaline earth metal is

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  17. Which of the following electronic configuration in the outermost two s...

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  18. Why does magnesium from Mg^(2+) and not Mg^(+)?

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  19. Which of the following is an amphoteric oxide?

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  20. Lime water is an aqueous solution of

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