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The elements Li, Na and K, each having o...

The elements Li, Na and K, each having one valence electron, are in period 2, 3 and 4 respectively of modern periodic table.
Which one of them is least rea-ctive ?
Give reason to justify your answer in each case.

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Li is least reactive due to smallest size, highest effective nuclear charge and less tendency to lose electron.
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SWAN PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -ADDITIONAL IMPORTANT QUESTIONS (Short Answer Type Questions)
  1. How does the reactivity of the metals vary in a group?

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  2. The elements Li, Na and K, each having one valence electron, are in pe...

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  3. The elements Li, Na and K, each having one valence electron, are in pe...

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  4. The elements Li, Na and K, each having one valence electron, are in pe...

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  5. Four elements P, Q, R and S have atomic numbers 12, 13, 14 and 15 resp...

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  6. Four elements P, Q, R and S have atomic numbers 12, 13, 14 and 15 resp...

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  7. Four elements P, Q, R and S have atomic numbers 12, 13, 14 and 15 resp...

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  8. The element Be, Mg, Ca are placed in the second group of the periodic ...

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  9. The element Be, Mg, Ca are placed in the second group of the periodic ...

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  10. The element Be, Mg, Ca are placed in the second group of the periodic ...

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  11. Table given below shows a part of the periodic table: Using this ...

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  12. Table given below shows a part of the periodic table: Using this ...

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  13. Table given below shows a part of the periodic table: Using this ...

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  14. Explain the following term- Sericulture

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  15. Two elements X and Y belong to group 1 and 2 - respectively in the sam...

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  16. Two elements X and Y belong to group 1 and 2 - respectively in the sam...

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  17. Two elements X and Y belong to group 1 and 2 - respectively in the sam...

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  18. Two elements X and Y belong to group 1 and 2 - respectively in the sam...

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  19. Two elements X and Y belong to group 1 and 2 - respectively in the sam...

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  20. Two elements X and Y belong to group 1 and 2 - respectively in the sam...

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