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What is the number of elements in: 1....

What is the number of elements in:
1. `1^(st)` period and
2. `2^(nd)` period of modern periodic table.

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ICSE-THE PERIODIC TABLE -TOPIC 2 Studying Individual Groups (5 Marks Questions)
  1. What is the number of elements in: 1. 1^(st) period and 2. 2^(nd)...

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

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  3. Take any one alkali metal and write its reaction with Oxygen

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  4. Take any one alkali metal and write its reaction with Water

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  5. Take any one alkali metal and write its reaction with Acid

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  6. Name or state the following with reference to the elements of the firs...

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  7. Name or state the following with reference to the element of the first...

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  8. Name or state the following with reference to the elements of the firs...

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  9. Name or state the following with reference to the elements of the firs...

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  10. Name or state the following with reference to the element of the first...

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  11. Name or state the following with reference to the elements of the firs...

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  12. Name or state the following with reference to the element of the first...

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  13. Name or state the following with reference to the elements of the firs...

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  14. Name or state the following with reference to the elements of the firs...

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  15. Name or state the following with reference to the elements of the firs...

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

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  17. The table given below shows the position of element U, V, X, Y and Z ...

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  18. The table given below shows the position of element U, V, X, Y and Z ...

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  19. In the table given below, six elements are shown with their atomic nu...

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  20. In the table given below, six elements are shown with their atomic nu...

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  21. In the table given below, six elements are shown with their atomic nu...

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