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What is the number of valence electrons ...

What is the number of valence electrons in an element of group 1 and group 18 respectively?

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CHETANA PUBLICATION-Periodic Classifications of ELements-EXAMPLE
  1. State the law on which modern periodic table is based

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  2. How many groups are there in the modern periodic table?

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  3. What is the number of valence electrons in an element of group 1 and g...

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  4. What is the trend in the variation of valency while going down a group...

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  5. Which pair of elements do you think will have similar properties? : So...

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  6. State the merits of Mendeleev's periodic table.

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  7. What are the demerits of Mendeleev's periodic table?

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  8. Merits of Modern periodic table over Mendeleev's periodic table

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

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  10. The atomic number of beryllium is 4 while that of oxygen is 8.Write do...

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  11. Write the electronic configuration and valency of first 20 elements.

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

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

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  14. Comparative study of all the four-blocks of Modern periodic table

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  15. How could the modern periodic Table remove various anomallies of Mendl...

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  16. Answer the equation based on the given data To which group do the el...

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  17. Answer the equation based on the given data Arrange the above eleme...

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  18. Answer the equation based on the given data Which of the above elem...

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  19. Answer the equation based on the given data What is the periodic tr...

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  20. In the following table, seven elements P,Q,R,S,T,U and V (here letters...

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