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Electron gain enthalpies of halogens are...

Electron gain enthalpies of halogens are largely negative. Explain.

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Electron Gain Enthalpy

The electron gain enthalpies of halogens are as given below: F =- 332, CI =- 349, Br =- 324, I =- 295 kJ mol^(-1) . The less negative value for F as compared to that of CI is due to:

Statement-1: Second electron gain enthalpy of halogens is always positive. Statement-2: Fluorine has most negative electron gain enthalpy.

The absolute value of the electron gain enthalpy of halogens satisfies :

Electron gain enthalpy will be positive in

PRADEEP-P-BLOCK ELEMENTS -SHORT ANSWER QUESTIONS
  1. The colour deepens from fluorine to iodine in halogen family. Explain.

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  2. Fluorine exhibit only – 1 oxidation state whereas other halogens exhib...

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  3. Electron gain enthalpies of halogens are largely negative. Explain.

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  4. Hydrogen chloride can be prepared by heating alkali metal chloride wit...

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  5. NO(2) readily dimenise, whereas ClO(2) does not. Why ?

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  6. HF is a weaker acid than HI. Explain.

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  7. Give two examples to show the anomalous behaviour of fluorine.

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  8. How is HCl prepared in the laboratory ? Write balanced chemical equati...

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  9. How will you prepare Cl(2) gas in the laboratory ? Discuss its oxidisi...

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  10. Balanced the following equations: (a) H(2)O(2)+H^(o+)+Fe^(2+)rarr H(...

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  11. Draw structures of (i) Hypochlorous acid (ii) Chlorous acid (iii...

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  12. Write the structures of oxoacids of chlorine and discuss their relativ...

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  13. Explain why acidic strength of oxyacids of halogens decreases with inc...

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  14. Arrange the following in decreasing order of their oxidising power : C...

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  15. What are interhalogen compounds ? Why these compounds are more reacti...

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  16. Whate are interhalogen compounds ? How are they classified ? Discuss t...

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  17. Explain hybridization in AB(5) and AB(7) type of interhalogen compound...

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  18. Draw the structures of the following compounds : (i) BrO(4)^(-) (i...

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  19. What are polyhalides ? How is I(3)^(-) prepared ? Discuss its structur...

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  20. What happens when (i) CsI(3) and (ii) RbICl(2) are heated ? Discuss th...

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