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Why are halogens coloured?...

Why are halogens coloured?

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(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.

CENGAGE CHEMISTRY ENGLISH-APPENDIX INORGANIC VOLUME 2-Exercises
  1. Although chlorine and oxygen have nearly same electronegativity yet on...

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  2. Write two uses of ClO(2).

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  3. Why are halogens coloured?

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  4. Write the reactions of F(2) and Cl(2) with water.

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  5. How can you prepare Cl(2) from HCl and HCl from Cl(2)? Write reactions...

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  6. What inspired N. Bartlett for carrying out reaction between Xe and PtF...

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  7. What are the oxidation states of phosphorus in the following:

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  8. Write balanced equations for the following: (i) NaCl is heated wit...

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  9. How are xenon fluorides XeF(2), XeF(4) and XeF(6) obtained?

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  10. With what neutral molecule is ClO^(–) isoelectronic? Is that molecule ...

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

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  12. Arrange the following in the order of property indicated for each set:

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  13. Which one of the following does not exist?

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  14. Give the formula and describe the structure of a noble gas which is is...

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  15. Why do noble gases have comparatively large atomic sizes?

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  16. List the uses of neon and argon gases.

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  17. Write down the electronic configuration of: ltBrgt (i) Cr^(3+) (ii)...

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  18. Why are Mn^(2+) compounds more stable than Fe^(2+) towards oxidation t...

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  19. Explain briefly how +2 state becomes more and more stable in the first...

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  20. To what extent do the electronic configurations decide the stability o...

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