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Why are alkali metals always univalent? ...

 Why are alkali metals always univalent? Which alkali metal ion forms largest hydrated ion in aqueous solution?

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They are always univalent because after losing one electron, they acquire nearest inert gas configuration. Lit forms largest hydrated cations because it has the highest hydration energy.
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FULL MARKS-ALKALI AND ALKALINE EARTH METALS-Additional Questions Solved
  1. Beryllium and magnesium do not give colour to flame whereas other alka...

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  2. Why are lithium salts commonly hydrated and those of the other alkali ...

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  3. Why are alkali metals always univalent? Which alkali metal ion forms l...

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  4. What is the following compounds (Give equations for the reactions)?Wha...

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  5. Explain the following: (a) Lithium iodide is more covalent than lit...

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  6. Why alkali metals are soft and have low melting points?

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  7. Why is LiF almost insoluble in water, whereas LiCl soluble not only in...

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  8. The hydroxides and carbonates of sodium and potassium are easily solub...

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  9. Draw the structure of BeCl(2) in different physical states.

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

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  11. . Alkali metals give colouration when heated in Bunsen flame. Give rea...

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  12. How Sodium metal  reacts with (i) ethanol and (ii) acetylene.

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  13. Mention the uses of lithium and its compounds.

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  14. What are the uses of sodium and its compounds?

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  15. What are the uses of potassium and its compounds?

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  16. What is soda ash ? How it obtained ?

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  17. Mention the uses of washing soda (or) sodium carbonate

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  18. How would you prepare pure sodium chloride from crude salt?

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  19. Mention the uses of sodium chloride.

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  20. What are the uses of sodium hydroxides?

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