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Write a short note on: Position of is...

Write a short note on:
Position of isotpes in the Mendeleev's and the Modern periodic table

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NAVNEET PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-EXERCISE
  1. Answer the following questions: Observe the figure and answer the fo...

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  2. Answer the following questions: Give two examples of metalloids.

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  3. Write a short note on: Position of isotpes in the Mendeleev's and t...

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  4. Answer the following questions: Write a short note on the zig-zag lin...

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  5. Answer the following questions: Classify the following elements into...

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  6. Answer the following questions: Classify the following elements into...

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  7. Answer the following questions: Classify the following elements into...

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  8. Answer the following questions: Identify the electronic configuration...

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  9. Answer the following questions: Define (i) Group (ii) Period.

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

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

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

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

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

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

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

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

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

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

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

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