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Give scientific reasons : Elements be...

Give scientific reasons :
Elements belonging to the same group have the same valency

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BAL BHARTI-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. The atom having the smallest atomic mass .

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  2. Write the name and symbol of the element from the description. The m...

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  3. The noble gas with the smallest atomic radius

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  4. Write the name and symbol of the element from the description. The m...

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  5. Write a short note on: Mendeleev's periodic law

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  6. Write a short note on: Structure of the Modern periodic table

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

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  8. Atomic radius goes on decreasing while going from left to right in a p...

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  9. Give scientific reasons : Metallic character goes on decreassing wh...

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  10. Give scientific reasons : Atomic radius goes on increasing down a g...

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  11. Give scientific reasons : Elements belonging to the same group have...

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  12. Give scientific reasons : The third period contains only eight elem...

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  13. Write the names from the description: The period with electrons in t...

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  14. The group with valency zero

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  15. The family of non-metals having valency one .

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  16. The family of metals having valency one .

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  17. The family of metals having valency two

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  18. The metalloids in the second and third periods

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  19. Non-metals in the third period .

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  20. Write the names from the description. Two elements having valency 4.

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