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What happens when alkali metals are expo...

What happens when alkali metals are exposed to air ?

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ICSE-THE s - BLOCK ELEMENTS-SHORT ANSWER TYPE QUESTIONS
  1. Why are potassium and caesium rather than lithium used in photoelectri...

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  2. Alkali metals are highly reactive elements. Explain, why?

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  3. What happens when alkali metals are exposed to air ?

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  4. Why are alkali metals not kept under water?

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  5. Why are lithium halides partially covalent ? Explain with examples.

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  6. Give a reason for each of the following: Alkali metals are good red...

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  7. Inspite of very high ionisation energy, lithium is the strongest reduc...

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  8. Why are the solutions of alkali metal atoms in liquid ammonia blue col...

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  9. Why does the basic strength of the hydroxides of alkali metals increas...

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  10. Name the chief factor responsible for the anomalous behaviour of lithi...

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  11. The elements of group 2 are called alkaline earth metals. Give reason.

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  12. The atomic radii of alkaline earth metals are smaller than those of th...

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  13. Why are the second ionisation energies of alkaline earth metals much s...

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  14. Among alkaline earth metals which element do you expect to be least el...

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  15. Why do alkaline earth metals have higher melting points than group 1 e...

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  16. Inspite of much higher second ionisation energy as compared to the fir...

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  17. Comment on the colour and magnetic behaviour of dipositive ions of gro...

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  18. Why do alkaline earth metals and their compounds impart characteristic...

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  19. Giving suitable reasons, arrange alkaline earth metals in the increasi...

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  20. Giving suitable reasons, arrange alkaline earth metal hydroxides in th...

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