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Four elements P, Q, R and S have atomic ...

Four elements P, Q, R and S have atomic numbers 12, 13, 14 and 15 respectively.
Answer the following questions giving reasons :
Classify these elements as metals and non-metals

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P and Q. are metals as these can lose. electrons. S is non-metals as it can gain electron and R is metalloid.
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SWAN PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -ADDITIONAL IMPORTANT QUESTIONS (Short Answer Type Questions)
  1. The elements Li, Na and K, each having one valence electron, are in pe...

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

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

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

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

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

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

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

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

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

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  11. Explain the following term- Sericulture

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

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

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

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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. Lithium, sodium potassium are all metals that react with water to libe...

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  19. Explain the following term- Rearing.

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  20. An atom has electronic configuration 2,8,7. What is the atomic number ...

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