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Which in each pair of elements has a mor...

Which in each pair of elements has a more negative electron gain enthalpy?
(a) O or F

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`ubrace("Fluorine")_(-328"KJ/Mole")` has more negative electron gain enthalpy than that of `ubrace("Oxygen")_("-141.2 KJ/Mole")`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-Very Short Answer Questions
  1. Energy of an electron in the ground state of the hydrogen atom is -2.1...

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  2. Ionization enthalpy [IE1] of O is less than that of N - explain.

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  3. Which in each pair of elements has a more negative electron gain entha...

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  4. Which in each pair of elements has a more negative electron gain entha...

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  5. What are the major differences between metals and non-metals?

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  6. Use the periodic table to identify elements. (a) With 5 electrons in...

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  7. Use the periodic table to identify elements. (b) Would tend to lose ...

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  8. Use the periodic table to identify elements. (c ) Would tend to gain...

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  9. Given the outer electronic configuration of s,p,d and f-block elements...

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  10. Write the increasing order of the metalic character among the elements...

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  11. Write the correct increasing order of non-metallic character for B,C,N...

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  12. Write the correct increasing order of chemical reactivity in terms of ...

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  13. What is electronegativity? How is this useful in understanding the nat...

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  14. What is screening effect? How is it related to IE?

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  15. How are electronegativity and metallic & non-metallic characters relat...

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  16. What is the valency possible to Arsenic with respect to oxygen and hyd...

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  17. What is an amphoteric oxide? Give the formula of an amphoteric oxide f...

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  18. Name the most electronegative element. Is it also having the highest e...

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  19. What is diagonal relation? Give one pair of elements, that have this r...

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  20. How does the nature of oxides vary in the third period?

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