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Give a reason for each of the following:...

Give a reason for each of the following:
Alkali metals are good reducing agents.

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Give reasons for the following: Alkali metals are good reducing agents.

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Ca is the good reducing agent, because

Give reasons for the following: a. Alkli metals do not occur free in nature. b. Alkali metal salts impart characteristic colour to the flame. c. Caesium is used in photoelectric cell. d. Alkali metals are good reducing agents in aqueous medium.

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ICSE-THE s - BLOCK ELEMENTS-SHORT ANSWER TYPE QUESTIONS
  1. Why are alkali metals not kept under water?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. How does the basic character of oxides of group 2 elements vary on mov...

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

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  20. How does beryllium react with NaOH ?

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