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Why do inert gases have zero valency...

Why do inert gases have zero valency value ?

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VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PERIODIC TABLES-EXERCISE
  1. Second ionization energy of an element is higher than its firs...

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  2. Hydrogen can be placed in group 1 and group 17 in the periodic table. ...

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  3. Why do inert gases have zero valency value ?

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  4. Z' element belongs to (second ) 2^(nd) group in the periodical ...

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  5. DO the atom of an element and its ion have same size ?

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  6. Which one between Na and Na^(+) would have more size ?

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  7. What are representative elements? Give their valence shell configurati...

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  8. Formation of cation is endothermic where formation of anion is ex...

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  9. Different elements exist in different physical states. However only ga...

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  10. Explain the limiation of Mendeeff's periodic table .

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  11. How are the elements divided into s, p, d and f – blocks in the Modern...

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  12. Do you think Newland's law of octaves is correct ? Justify .

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  13. Why did Mendeleeff had to leave certain blank spaces in his per...

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  14. The second period element 'F' has electrons gain enthaly than...

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  15. An element has atomic number 19. where would you expect thi...

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  16. Give reason for the need of classification of element .

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  17. x,y and z are the elements of a Dobereiner 's tried .If the atom...

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  18. Explain the ionizaton energy order in the following sets of el...

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  19. Explain the ionizaton energy order in the following sets of el...

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  20. Explain the ionizaton energy order in the following sets of el...

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