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The order of metallic character of Si, N...

The order of metallic character of Si, Na, Mg, P is

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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 TELUGU-PERIODIC CLASSIFICATION-I-Questions (Explain briefly the following)
  1. The order of metallic character of Si, Na, Mg, P is

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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 higher electron ga...

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  4. Why are lanthanides and actinides placed separately at the bot...

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

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  6. Define transition elements. Name the different transition series.

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  7. Which element of the following pairs have smaller ionization enthalpy?...

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  8. Why is Na atom bigger than the atoms of both 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. Explain why cation is smaller and anion is larger in radii than their ...

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

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  15. What is electron gain enthalpy? On what factors does it depend?

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  16. Give the general variation of electron gain enthalpies in the periodic...

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  17. Define the term solution.

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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 electronegativity? On what factors does it depend?

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  20. What are the essential features of the periodic table of Mendeleev? Di...

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