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Show by a chemical reaction with water t...

Show by a chemical reaction with water that `Na_(2)O` is a basic oxide and `Cl_(2)O_(7)` is an acidic oxide.

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`Na_(2)O` with water forms a strong base whereas `Cl_(2)O_(7)` forms strong acid.
`Na_(2)O + H_(2)O rarr 2NaOH`
`Cl_(2)O(7) + H_(2)O rarr 2HClO_(4)`
Their basic or acidic nature can be qualitatively tested with litmus paper.
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-Long Answer Questions
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  2. Discuss in detail about the classification of elements by Mendeleeff.

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  3. From a study of properties of neighbouring elements, the properties of...

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  4. Define the mordern periodic law . Discuss the construction of t...

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  5. Discuss the relation between the number of electron filled into the su...

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  6. Write an essay on s, p, d and f-block elements.

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  7. Relate the electronic configuration of elements and their properties i...

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  8. What is a periodic property? How the following properties vary in a gr...

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  9. What is a periodic property? How the following properties vary in a gr...

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  10. What is a periodic property? How the following properties vary in a gr...

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  11. What is a periodic property? How the following properties vary in a gr...

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  12. Write a note on (a) Atomic radius.

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  13. Write a note on (b) Metallic radius.

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  14. Write a note on (c ) Covalent radius.

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  15. Define IE(1) and IE(2). Why is IE(2) > IE(1) for a given atom? Discuss...

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  16. How do the following properties change in group - 1 and in the third p...

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  17. How do the following properties change in group - 1 and in the third p...

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  18. How do the following properties change in group - 1 and in the third p...

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  19. How do the following properties change in group - 1 and in the third p...

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  20. Define electron gain enthalpy. How it varies in a group and in a perio...

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  21. What is electronegativity?

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