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Why cesium can be used in photoelectric ...

Why cesium can be used in photoelectric cell, while lithium cannot be ?

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IE of calcium is the least while that of lithium is maximum among alkali metals, thus caesium can lose electron very easily whilr lithium cannot. Thus Cs is used in photolectric cell, while Li cannot be.
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CENGAGE CHEMISTRY-S-BLOCK GROUP 1 - ALKALI METALS-Ex 4.1 (Subjective)
  1. Why superoxides of of alkali metals are paramagnetic ?

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  2. Alkali metals are paramagnetic but their salts are dimagnetic. Explain...

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  3. Give reasons for the following. a. LiCI is more covalent than KCI. ...

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  4. The Haber process can be represented as follows

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  5. Why does the reaction. proceed better with KF than with NaF ?

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  6. why lithium is kept wrapped in paraffin wax and not stored in kerosene...

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  7. When is a cation highly polarising? Which alkali metal cation has the ...

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  8. Why cesium can be used in photoelectric cell, while lithium cannot be ...

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  9. Give reason for the decreasing order of the conductivity of the follow...

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  10. NaHCO(3) and NaOH cannot exist together in solution. Why ?

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  11. On exposure to air, sodium hydroxide becomes liquid and after sometime...

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  12. Alkali metals are obtained by the electrolysis of the molten salts and...

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  13. What happens when: a. Potassium metal is dropped in water b. Potas...

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  14. How sodium carbonate is manufactured by the Solvay process ? State the...

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  15. a. Describe one method of manufacture of castic soda. b. What happen...

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  16. Answer the following: a. Which of the following has density greater ...

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  17. Explain the following: a. Alkali metals are paramagnetic, but their ...

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  18. Identify (A) and (B) in the following: KO(2)+S overset(Delta)rarr (A)...

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  19. LiOH has been used by astronauts. Explain the use with the help of rea...

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  20. Give the composition and action of backing powder.

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