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Why are halogens coloured?...

Why are halogens coloured?

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Explore conceptually related problems

(A) Complete the following chemical equations : (i) Cu+HNO_(3) (dilute) to (ii) XeF_(4)+O_(2)F_(2)to (B) Explain the following observations: (i) Phosphorous has greater tendency for catenation than nitrogen. (ii) Oxygen is a gas but sulphur is a solid. (iii) The halogens are coloured. Why ?

Explain why : Halogens are coloured and the colour deepens on moving down in the group from fluorine to iodine.

State true or false halogens are coloured.

Why are halogens strong oxidising agents ?

Why the halogen compounds used as solvents in industry are chlorides rather than bromides?

Assertion : All halogens are coloured. Reason : The halogens absorb visible light .

Statement-1: All halogens are coloured. Statement-2: Halogens exist in diatomic gaseous state. Statement-3: F_(2) is more reactive than Cl_(2)

IE of halogens are

Why interhalogens are more reactive than halogens ?

Explain why: Interhalogen compounds are more reactive than the related elemental halogens.

ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(SHORT ANSWER QUESTIONS)
  1. Why the melting and boiling points of halogens increase in going from ...

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  2. How is chlorine produced industrially?

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  3. Why are halogens coloured?

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  4. Why F2 is the strongest oxidising agent, although it has lower electro...

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  5. Why are halogens strong oxidising agents?

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  6. Why does fluorine not form polyfluorides?

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  7. What are hallucinogens? Give their two examples. Mention their clinica...

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  8. Why does fluorine exhibit abnormal behaviour ?

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  9. Why special methods are employed for the preparation of HBr and HI ?

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  10. Explain the trends in property in halogen family as given under: (i)...

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  11. How will you account that when chlorine is pased through a fluoride so...

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  12. Fluorine is more electronegative than iodine atom, yet HF has lower ac...

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  13. State the trends observed in case of each of the following: (i) Oxid...

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  14. Give reasons for the following: (i) Binary compounds of oxygen and f...

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  15. What happens when : (i) Cl2 is passed through hot NaOH. (ii) Cl2 ...

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  16. Noble gases are relatively inert elements. Give reasons.

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  17. Why ease to liquefy noble gases increases with increase in atomic numb...

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  18. Give reasons which prompted Bartlett to react xenon with fluorine to f...

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  19. How are XeO(3) and XeOF(4) prepared?

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  20. Explain the following : Only higher members of group 18 of the perio...

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