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Name elements of group 17. What are they...

Name elements of group 17. What are they called as?

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ICSE-THE PERIODIC TABLE -EXERCISE 5(C)
  1. Name or state the following with reference to the elements of the firs...

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  2. Halogens belong to which group of periodic table. Name any 2 halogens

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  3. Name elements of group 17. What are they called as?

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  4. Relative atomic mass of a light element up to calcium is approximately...

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  5. Horizontal rows of periodic table are called

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  6. Going across a period left to right, atomic size .........

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  7. Moving down in the second group, number of valence electrons ........

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  8. Moving down in the second group, number of valence electrons ........

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  9. Name the alkali metals. How many electrons(s) do they have in their ou...

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  10. Take any one alkali metal and write its reaction with (i) oxygen (ii) ...

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  11. Name the method by which alkali metals can be extracted.

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  12. What is the colour of the flame of sodium and potassium ?

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  13. An element A has 2 electrons in its, fourth shell. State its atomic n...

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  14. An element A has 2 electrons in its, fourth shell. State its electroni...

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  15. An element A has 2 electrons in its, fourth shell. State its valency

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  16. An element A has 2 electrons in its, fourth shell. State position in t...

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  17. An element A has 2 electrons in its, fourth shell. State is it a metal...

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  18. An element A has 2 electrons in its, fourth shell. State is it an oxi...

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  19. Name the first three alkaline earth metals.

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  20. (a)Name the first three alkaline earth metals. (b) Write their react...

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