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ANOMALOUS BEHAVIOUR OF LITHIUM...

ANOMALOUS BEHAVIOUR OF LITHIUM

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The anomalous behaviour of lithium is because of
(i) small size of atom and ion, (ii) high ionization enthalpy, and
(iii) absence of d- orbitals in its valence shell.
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MODERN PUBLICATION-S-BLOCK ELEMENTS ( ALKALI AND ALKALINE EARTH METALS ) -Conceptual Question 1
  1. Sodium metal is kept under kerosene. Explain.

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  2. All compounds of alkali metals are easily soluble in water but lithium...

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  3. ANOMALOUS BEHAVIOUR OF LITHIUM

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  4. Name the alkali metals which form superoxides when heated in excess of...

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  5. Name the metal which floats on water without any apparent reaction wit...

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  6. Predict giving reason, the outcome of the reaction: LiI + KF to

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  7. Why does the following reaction : proceed better with KF than w...

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  8. What compounds are formed when Li and Na combine with oxygen. Give the...

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  9. Explain why sodium is less reactive than potassium.

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  10. Why are potassium and cesium, rather than lithium can be used in photo...

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  11. Why are lithium salts commonly hydrated while those of other alkali me...

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  12. Why it LiF almost insoluble in water while LiCl is soluble not only in...

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  13. Lithium is the only alkali metal to form nitride directly. Explain .

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  14. An aqueous solution of sodium carbonate gives alkaline tests . Why ?

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  15. Why is Li(2)CO(3) decomposed at a lower temperature whereas Na(2)CO(3)...

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  16. LiH, LiF and Li(3)N show exceptional thermal stabilites. Comment.

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  17. Which out of Li or Na has greater value for the following properties :...

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  18. Which out of the following and why can be used to store an alkali met...

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  19. Why are alkali metals not found free in nature?

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  20. Why caesium can be used in photoelectric cell, while lithium cannot be...

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