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Answer the following questions: How ma...

Answer the following questions:
How many elements are there in the second and the third periods of the periodic table ?

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Name the following: The three metals in the third period of the modern periodic table.

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NAVNEET PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-EXERCISE
  1. Answer the following questions: Define (i) Group (ii) Period.

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  2. Answer the following questions: Write the numbers of vertical column...

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  3. Answer the following questions: How many elements are there in the s...

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  4. Answer the following questions: State the number of elements in the ...

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  5. Answer the following questions: State the number of elements in the ...

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  6. Answer the following questions: Which column is known as the zero gr...

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  7. Answer the following questions: Which group elements have seven elec...

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  8. Answer the following questions: How many electrons are there in the ...

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  9. Answer the following questions: How many electrons are there in the ...

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  10. Answer the following questions: Which block of the modern periodic t...

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  11. Answer the following questions: Name the group to which the most rea...

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  12. Answer the following questions: Name the element having one shell an...

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  13. Answer the following questions: How many valence electrons are there...

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  14. Answer the following questions: State the electronic configuration o...

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  15. Answer the following questions: Write the electronic configuration :...

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  16. Answer the following questions: Name the group containing highly rea...

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  17. Answer the following questions: Depending on electronic configuratio...

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  18. Go through the Modern periodic table (fig2.1) and write the names one ...

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  19. Answer the following questions: Deending on electronic configuration...

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  20. On going through the Modern periodic table (fig2.1) it is seen that th...

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