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Which halogen has highest value of elect...

Which halogen has highest value of electron gain enthalpy?

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Chlorine has the highest electron gain enthalpy among the halogens. This is because the interelectronic repulsions in chlorine are weaker than in F due to bigger size of chlorine.
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ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Why is sulfurous acid a reducing agent ?

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  2. Why do hydrides of oxygen and sulfur differ in physical state?

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  3. Which halogen has highest value of electron gain enthalpy?

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  4. Write the chemical equation for the following: Ca(3)(PO4)2 + SiO(2) ...

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  5. Why is nitrous acid oxidant as well as reductant ?

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  6. Which is least basic ? SbH(3)PH3,NH3,AsH3

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  7. Draw the structure of XeF(2)

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  8. Among the noble gases only xenon is well known to form chemical compou...

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  9. Assign reason for the following: In solid state, PCI5 , behaves as an ...

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  10. Are all the five bonds in PCl(5) molecule equivalent? Justify your ans...

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  11. Complete the following reactions : (i) P4 + SOCl2 rarr

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  12. Complete the following reactions : (ii) CH3COOH + PCl5 rarr

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  13. What happens when (write balanced chemical equations): Ammonia is ...

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  14. In which one of the two structures, NO(2)^(+) and NO(2)^(-) the bond a...

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  15. Why is the bond angle in PH(3) molecule lesser than that in NH(3) mole...

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  16. Answer the following : (i) Which neutral molecule would be isoelectr...

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  17. Why is Bi(V) a stronger oxidant than Sb(V) ?

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  18. Why is red phosporus less reactive than white phosphorus?

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  19. In the ring test for identification of nitrate ion, what is the formul...

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  20. Write the balanced equation for complete hydrolysis of XeF6.

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