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Explain why a few elements such as Be(+0...

Explain why a few elements such as `Be(+0.6),N(+0.3) & He(+0.6)` have positive electron gain enthalpies while majority of elements do have negative values.

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[half filled and fully filled orbitals]
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BANSAL-PERIODIC TABLE-EXERCISE-3
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  2. The IE do not follow a regular trend in II & III periods with increasi...

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  3. Explain why a few elements such as Be(+0.6),N(+0.3) & He(+0.6) have po...

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  4. Which bond in each pair is more polar (a) P-CI or P - Br (b) S -CI o...

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  7. Which oxide is more basic, MgO or BaO? Whay?

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  8. The basic nature of hydroxides of group 13 (III-A) decreases progressi...

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  9. Based on location in P.T. which of the following would you expect to b...

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  10. Compare the following giving reasons Acidic nature of oxides: CaO, CO,...

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  11. The ionisation potentials of atoms A and B are 400 and 300 kcal mol^(-...

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  12. If internuclear distance between CI atoms in CI(2) is 10Å & between H ...

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  13. The As-CI bond distance in AsCI(3) is 2.20 Å. Estimate the SBCR (singl...

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  14. The Pt-CI distance is 2.32 A in several crystaline compounds What is...

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  15. The IE values of Al((g)) = Al^(+) +e is 577.5 kJ mol^(-) and DeltaH fo...

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  16. For the gaseous reaction K+F rarrK^(o+)+F^(ɵ) Delta H = 19 kcal mo...

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  17. Calculate E.N. of chlorine atom on Pauling scale if I.E. of CI^(-) is ...

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  18. Calculate the electronegativity of fluorine from the following data: ...

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  19. Calculate the E.N. of CI from the bond energy of CIF (61 K Cal//"mol")...

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  20. How many chlorine atoms will be ionised CI rarr CI^(+) +e^(-1) by the ...

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