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Which of the halogens (excluding astatin...

Which of the halogens (excluding astatine) has highest electronegativity ?

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Which among the halogens (excluding astatine) (i) has highest electron affinity ? (ii) has highest electronegativity ? (iii) is a liquid at room temp. and pressure ? (iv) has lowest ionisation energy ?

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USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
  1. What happens when PbS is treated with ozone ?

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  2. The Halogen which has the highest electron affinity :

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  3. Which of the halogens (excluding astatine) has highest electronegativi...

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  4. Which of the halogens (excluding astatine) is strongest oxidant ?

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  5. Which of the halogens (excluding astatine)has lowest ionisation energy...

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  6. How is H2S prepared in the laboratory ?

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  7. How can you prepare HCl gas in the laboratory?

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  8. Explain why F2 does not form oxyacids.

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  9. Explain why halogens are strong oxidising agents.

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  10. Explain why HBr and HI can't be prepared by heating NaBr and Nal with ...

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  11. How does sulphuric acid react with sodium bromide ?

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  12. What is charring of sugar ?

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  13. HF is less volatile than HCl. Explain.

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  14. Do as directed : F2,Cl2,Br2,I2 (increasing bond dissociation energy)

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  15. Do as directed : H2O,H2S, H2Se, H2Te (Increasing acidic strength)

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  16. HF can form the salt KHF2 while HCl does not form KHCl2. Explain.

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  17. Give the principle of manufacture of H2SO4 by contact process.

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  18. What is the action of O3 on acidified FeSO4 solution ?

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  19. How does xenon react with O2F2 at -118^@C ?

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  20. Why does xenon form compounds only with fluorine and oxygen ?

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