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Why are electron affinities of noble gas...

Why are electron affinities of noble gases zero? Arrange halogens in increasing order of electron affinity.

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The electron gain enthalpy of noble gases in zero because it has stable electronic configuration . `ClgtBrgtFgtI` is increasing order to electron gain enthalpy.
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CENGAGE CHEMISTRY-APPENDIX - INORGANIC VOLUME 1-Exercise Short
  1. What is diagonal relationship? Why does Li resemble with Mg?

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  2. Give four characteristics of f-block elements. Why are they called inn...

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  3. Why are electron affinities of noble gases zero? Arrange halogens in i...

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  4. Arrange the species in each group in order of increasing ionisation en...

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  5. What are the factors that affect electron affinity?

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  6. Explain the term (a) screening effect (b) penetration effect and ( c )...

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  7. a. Explain why the second ionisation energy of B is significantly high...

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  8. a. How does basic character of oxides and hydroxides vary down the gro...

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  9. a. Among Cu^(o+),Cu^(2+) and Cu which is the largest in size and why? ...

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  10. Give five characteristics of p-block elements.

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  11. Give advantages of long form of periodic table.

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  12. Elements A and B have atomic numbers 11and 24 respectively. Write the...

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  13. How do melting and boiling points vary in a (a) period and (b) group i...

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  14. a. Name the most metallic element in second period and most non-metall...

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  15. How does electronegativity vary down the group 17 and why? How does it...

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  16. Among the elements of second period Li to Ne pick out the element: a...

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  17. Why CaCl(2) and NaCl are bond conductor of electricity in the solid st...

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  18. Write the Lewis dot symbols and predict the valencies for the followin...

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  19. Out of KCI and CaO, which has higher lattice energy and why?

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  20. Is MgCl(2) linear or bent or neither of two? Explain

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