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Why do noble gases have comparatively la...

Why do noble gases have comparatively large atomic size in a particular period ?

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USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
  1. Explain why bond angle in H2S is lower than in H2O ?

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  2. A mixture of three gases A, B, C is passed first through acidified K2C...

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  3. Why do noble gases have comparatively large atomic size in a particula...

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  4. Why are halogens coloured ?

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  5. Arrange H2O,H2S,H2Se,H2Te in order of increasing thermal stability.

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  6. How does ozone react with silver metal ?

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  7. What happens when PbS is treated with ozone ?

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  8. The Halogen which has the highest electron affinity :

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

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

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

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  12. How is H2S prepared in the laboratory ?

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

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  14. Explain why F2 does not form oxyacids.

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  15. Explain why halogens are strong oxidising agents.

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

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  17. How does sulphuric acid react with sodium bromide ?

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  18. What is charring of sugar ?

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  19. HF is less volatile than HCl. Explain.

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

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