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Account for the following: Halogen are c...

Account for the following: Halogen are coloured.

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R G PUBLICATION-THE p-BLOCK ELEMENTS-EXERCISE
  1. Describe the conditions of maximum yield of SO3 by contact process in ...

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  2. Write the formula of carnallite and fluoroaptite.

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  3. Account for the following: Halogen are coloured.

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  4. Why fluorine shows only one oxidation state of (-1)?

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  5. Discuss the various factors which affect the decreasing oxidising abil...

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  6. How Cl2 is prepared without heating? How it is prepared electrolytical...

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  7. How gold ornaments are cleaned by aqua re-gia? Write the reactions inv...

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  8. Draw the structures of chloric acid & per chloric acid. Which is more ...

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  9. Why the noble gases have very low boiling points?

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  10. Why xenon forms compound?

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  11. Arrange the following in the order of property indicated: NH3, PH3, As...

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  12. What is the hybridization of lodine in IF7? Draw Its structure & name ...

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  13. List two uses each from neon & argon gases.

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  14. What happens when: Magnesium reacts with N2 & than hydroly-sed.

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  15. What happens when: Ammonium chloride reacts with slaked lime.

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  16. What happens when: Ferric chloride reacts with NH4OH

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  17. What happens when: Silver chloride reacts with aq NH3

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  18. What happens when: Zinc reacts with conentrated HNO3

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  19. What happens when: Iodine reacts with dil HNO3

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  20. What happens when white Phosphourous is heated with NaOH solution in a...

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