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Arrange the species in each group in ord...

Arrange the species in each group in order of increasing ionisation energy and give reason:
a. `K^(o+)`,`Cl^(ө)`,`Ar` , b. `Na`,`Mg`,`Al` , c. `C`,`N`,`O`

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a. `K^(o+)gtArgtCl^(ө)`, because nuclear charge goes on decreasing .
b. `NaltAlltMg`, because `Mg` has stable electronic configuration where `Na` is larger atomic size due to which it has lowest ionisation energy.
c. `CltOltN`, because `N` has half-filled `p`-orbital which is more stable whereas carbon is larger in size.
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CENGAGE CHEMISTRY ENGLISH-APPENDIX - INORGANIC VOLUME 1-Exercise Short
  1. Give four characteristics of f-block elements.

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

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

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  4. State the factors which affect electronaffinity

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  5. Explain the term (a) screening effect

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  6. which has higher 1st ionisation energy B or Be and why?

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  7. How does reducing power of elements vary in group 1?

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

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  9. Give two characteristics of p-block elements.

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  10. What is modern periodic law? Mention the important features of the lon...

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

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

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

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

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  15. Among the elements of second period pick out the element with the l...

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  16. Why CaCl(2) and NaCl are bad conductor of electricity in the solid sta...

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  17. Write the Lewis dot symbols and predict the valencies for the elements...

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

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

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  20. NaBr gives pale yellow precipitate with AgNO(3) solution but CBr(4) do...

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