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Wrtie the chemical electronic configurat...

Wrtie the chemical electronic configuration of nitrogen(N=7) and phosphorous (P=15).

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MBD-PERIODIC CLASSIFICATION OF ELKHOENTS-EXAMPLE
  1. Locate the following group in the table: noble gases.

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  2. What properties do the elements in the same vertical column of the per...

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  3. Wrtie the chemical electronic configuration of nitrogen(N=7) and phosp...

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  4. Name the members of the alkaline earth family

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  5. To which group and period do they belong: sodium and calcium

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  6. Which member is the least reactive in nature?

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  7. Why are the members of group 1 called alkali metals?

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  8. An atom has electronic configuration 2,8,7. What is the atomic number ...

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  9. An atom has electronic configuration 2,8,7. To which of the following...

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  10. What physical and chemical properties of elements were used by mendele...

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

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

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

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

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

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

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

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

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

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

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