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What are periodic properties ? Give exam...

What are periodic properties ? Give example.

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The term periodicity of properties indicates that the elements with similar properties reappear at certain regular intervals of atomic number in the periodic table.
Ex 1. Atomic radii, 2. Ionisation energy
3. Electron affinity 4. Electron negativity.
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SURA PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-ADDITIONAL SHORT ANSWERS
  1. Which among the halogens would you expect to have the least electroneg...

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  2. Arrange the following elements in the increasing order of non - metall...

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  3. Give reason for the following statement. Halogens act as good oxidisin...

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  4. Write notes on triads and periods.

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  5. Write a note about chancourtois classification .

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  6. Mention the names of the elements with atomic number 101 ,102,109 and ...

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  7. Write any two characteristic properties of alkali metals.

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  8. Account for the fact that noble gases exhibit low chemical reactivity.

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  9. What are semi - metal ? Give example.

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  10. What are periodic properties ? Give example.

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  11. Define ionic radius.

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  12. Electron gain enthalpy values

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  13. Electron gain enthalpy is F is less negative than Cl Why ?

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  14. Define valency . How is it determined ?

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  15. Why there is a need for classification of elements?

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  16. What are the reasons behind the Moseley's attempt in finding atomic nu...

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  17. Explain about the salient features of metals.

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  18. Explain about the characteristic of non - metals.

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  19. What is covalent radius ? . How would you determine the covalent radiu...

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  20. Mention some characteristics of ionization energy.

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