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Why is it that non-metals do not displac...

Why is it that non-metals do not displace hydrogen from dilute acids?

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MBD-PERIODIC CLASSIFICATION OF ELKHOENTS-EXAMPLE
  1. What physical and chemical properties of elements were used by mendele...

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  2. What are amphoteric oxides? give two examples of amphoteric oxides?

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  3. Why is it that non-metals do not displace hydrogen from dilute acids?

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  4. What are noble gas elements ? Why are they so called?

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  5. How is metallic character of an element defined? How does the melallic...

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  6. Why do the elements present in a group show similar chemical propertie...

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  7. How does the reactivity of the metals vary in a group?

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  8. Name the elements present in the second period. Give their electronic ...

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  9. Why do not the elements present in period show same valency?

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  10. The metallic character of the elements in a period decreases from left...

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  11. Give symbols for: a metal belonging to second group of the periodic ta...

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  12. Give symbols for:A metal belonging to the third group of the periodic ...

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  13. Give symbols for: two non-metals belonging to the halogen family.

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  14. Write electronic structures of:potassium

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  15. Write electronic structures of: lithium

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  16. Write electronic structures of: fluorine

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  17. Name two other elements which are in the same family as (i) carbon (II...

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  18. Carbon (atomic number 6) and silicon(atomic number 14) are elements in...

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  19. Sodium and aluminium have atomic numbers of 11 and 13 respectively the...

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  20. Give the atomic number and electronic disribution of: The thrid alkali...

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