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Why are halogens coloured ?...

Why are halogens coloured ?

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Why halogens are coloured gases and they are very reactive ? Comment on it.

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JMD PUBLICATION-SOLUTIONS-EXAMPLE
  1. What are pseudohalogens ? Give example.

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  2. Explain: Electron gain enthalpy of chlorine is more negative than fluo...

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  3. Why are halogens coloured ?

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  4. Why Cr^(2+) is strongly reducing while Mn^(3+) is strongly oxidising ?

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  5. Scandium (z = 21) is a transition element but zinc (z = 30) is not. Ex...

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  6. Write the IUPAC name of K3[Fe(CN)5NO].

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  7. Write IUPAC name of Na3[Co(NO2)6].

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  8. Write a short note on linkage isomerism.

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  9. Define zero order reaction. Derive integrated rate equation for rate c...

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  10. Calculate emf and delG for the following cell at 298 K : Mg(s)abs(Mg...

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  11. Ethers possess a dipole moment even if the alkyl groups in the molecul...

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  12. Explain why lower ethers are highly soluble in water?

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  13. Explain Williamson’ssynthesis.

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  14. Discuss oxidation of primary,secondary and tertiary alcohols.

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  15. Calculate two third life of a first order reaction having k=5.48xx 10^...

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  16. Thermal decomposition of dinitrogen penta oxide takes place by the fol...

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  17. Discuss the structure of SF6, on the basis of hybridisation.

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  18. Write the following reactions : Carbylamine reaction.

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  19. Explain the following reaction reaction : Schiemann reaction.

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  20. Write short notes on Markownikoff's rule.

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