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How many valence electrons are there in ...

How many valence electrons are there in each of these elements?

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All the elements of group 1 have one valence electron.
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TARGET PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -Apply your knowledge
  1. Write the electronic configuration of the first four elements in this ...

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  2. Which similarity do you find in their configuration?

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  3. How many valence electrons are there in each of these elements?

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  4. On going through the modern periodic table, it is seen that the elemen...

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  5. Is the number of valence electrons same for all these elements?

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  6. Is the number of shells the same in these ?

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  7. The elements in the third period, namely, Na, Mg, AI, Si, P, S, CI and...

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  8. What are the values of n for the shells L and M?

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  9. What is the maximum number of electrons that can be accommodated in a ...

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  10. Deduce the maximum electron holding capacity of the shells K, L and M?

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  11. What is the relationship between the electronic configuration of an el...

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  12. The atomic number of beryllium is 4 while that of oxygen is 8. Write d...

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  13. The table on Textbook page no. 25 is made on the basis of the modern p...

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  14. What is the periodic trend in the variation of valency while going fro...

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  15. What is the periodic trend in the variation of valency while going dow...

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  16. By referring to the modern periodic table, find out the periods to whi...

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  17. State the period to which the above elements belong.

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  18. Arrange the above elements in a decreasing order of their atomic radii...

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  19. Does this arrangement match with the pattern of the second period of t...

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  20. Why this arrangement of elements is similar to the above period of the...

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