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Why the compounds of group 17 with group...

Why the compounds of group 17 with group 13 elements are more ionic and stable than with (group 1) elements? (b) `Na_2O` is more ionic than `Li_2O` . why?

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CBSE COMPLEMENTARY MATERIAL-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -3 - MARKS QUESTIONS
  1. Why Ca has larger atomic radius than Al ?

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  2. Why 2s^2 electron is difficult to remove than 2p electron ?

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  3. Why the compounds of group 17 with group 13 elements are more ionic ...

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  4. Explain the following data : Ionisation energy Cl lt H lt O lt N lt...

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  5. IE2 of 3^(rd) period elements is as follows. Why ? Mg lt Si lt Al ...

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  6. Account fot the following: Halogens have very high negative electron...

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  7. Account fot the following: The electron gain enthalpy of Cl (Z = 17 ...

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  8. The ionisation energy of nitrogen is more than that of oxygen because

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  9. What are the d- block elements? Write any four properties of d - block...

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  10. State Modern periodic law.

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  11. Explain the following: Electro-negativity

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  12. Explain the following: Shielding effect

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  13. Among the second period elements the actual ionisation enthalpies are ...

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  14. Among the second period elements the actual ionisation enthalpies are ...

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  15. What do you understand by the isoelectronic species ? Name a species t...

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  16. What do you understand by the isoelectronic species ? Name a species t...

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  17. What do you understand by the isoelectronic species ? Name a species t...

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  18. What do you understand by the isoelectronic species ? Name a species t...

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  19. Show by chemical with water that Na(2) O is a basic oxide and CI(2)O(2...

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  20. Name a species that will be isoelectronic with each of the following a...

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