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Which of the elements Na, Mg, Si and P h...

Which of the elements Na, Mg, Si and P have the geatest difference between 1st and 2nd ionization enthalpy and why?

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The element Na is expected to have the greatest difference between 1st and 2nd lonizationenthalpies. After losing one electron, `Na^+` ion acquires a noble ga configuration and the removal of the second electron is the most difficult as compared to the other elements.
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PATHFINDER-PERIODIC CLASSIFICATION OF ELEMENTS AND PERIODIC PROPERTIES-QUESTION BANK
  1. Arrange the increasing order of atomic radii Li, Na, K.

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  2. Which is largest among Ca^(+2), Mg^(+2) , Ba^(+2) and why?

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  3. Which of the elements Na, Mg, Si and P have the geatest difference bet...

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  4. Why Gr-17 elements acts as good oxidising agent?

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  5. Arrange Cl, Cl^- , Cl^+ in the increasing order of size?

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  6. How does metallic character vary in the group and period?

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  7. State the decreasing order of the penetration power of orbitals.

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  8. An element has on atomic number = 53. State its position in the Period...

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  9. The Reason for diagonal relationship is -

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  10. The order of ionic redius of N^(3-), O^(2-), F^- and Na^+ is -

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  11. What are actinones?

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  12. The elements A, B and C have atomic numbers Z -2, Z and Z +1 respecive...

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  13. The elements A, B and C have atomic numbers Z -2, Z and Z +1 respecive...

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  14. Why do transition elements have a greater tendency to form co-ordinate...

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  15. Give four defects of 'Mendeleev's periodic table.

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  16. Consider the following species. N^(3-) , O^(2-) , Na^+ , Mg^(+2) , Al...

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  17. Consider the following species. N^(3-) , O^(2-) , Na^+ , Mg^(+2) , Al...

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  18. First I.P. of Be is greater than B.

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  19. First I.P. of N is greater than O Explain.

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  20. The first I.P. of 'C' is greater than of 'B' where as reverse is true ...

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