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Arrange the following elements in the in...

Arrange the following elements in the increasing order of non - metallic character. B,C,Si,N,F

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Metallic character increases down a group and decreases along a period as we move from left to right. Hence the order of increasing metallic character is, `Plt Si lt Be lt Mg lt Na. `
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NCERT TAMIL-PERIODIC CLASSIFICATION-I-Questions (Explain briefly the following)
  1. Arrange the following elements in the increasing order of non - metall...

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  2. Why does the first ionization enthalpy would have higher electron gain...

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  3. Which of the following pairs of elements would have more negative elec...

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  4. Lanthanides and actinides are placed in separate rows at the bottom of...

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  5. What do you mean by representative elements? Name the groups of the pe...

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  6. Name any two transition elements and any two inner transition elements...

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  7. Which of the following pairs of elements would you expect to have lowe...

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  8. Enlist the simularities between lithium and magnesium.

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  9. What do you mean by the term electron gain enthalpy? How does electron...

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  10. Explain how the elements are arranged in the form of the periodic tabl...

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  11. What are normal, transition and inner- transition elements?

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  12. What are the differences between normal and transition elements?

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  13. Anionic radius is higher than the corresponding neutral atom. Give rea...

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  14. Explain the size of group Cl^(-1) gt Na^(+) .

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  15. What is meant by electronegativity? On what factors does it depend?

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  16. Justify the position of lanthanides and actinides in the periodic...

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  17. Define the term Ionic Radii.

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  18. What do you mean by ionization enthalpy? How does it vary across a per...

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  19. What is meant by dielectric ?

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  20. What are the demerties of long form periodic table.

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