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PCl , is known but 'NCl5' is unknow...

PCl , is known but 'NCl_5' is unknown. Why?

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N. cannot extend its covalency. to .5 due. to the non-availability of d orbitals in its atom. But P has energetically available d orbitals. Hence P can form .PCl_5.
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V PUBLICATION-The p-BLOCK ELEMENTS-QUESTION BANK
  1. Account for the' "play of-colours' shown by. sodium thiosulphate with-...

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  2. a, What are inter-halogen compounds? Give any two example. b. The numb...

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  3. PCl , is known but 'NCl5' is unknown. Why?

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  4. N2 is inert. Why?

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  5. Urea is used as a fertilizer. Why?

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  6. What is the reaction between ammonium and chloroplatinic acid?

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  7. Which property is made use of in separating red phosphorus from white ...

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  8. Which is more stable PCl3 or PCl5 Why?

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  9. Group 16 elements are called chalcogens? Why?

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  10. Which has higher value for 1st ionisation enthalpy - oxygen or nitrog...

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  11. Group 16 elements have higher values of electronegativity. Why?

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  12. Oxygen is a diatomic gas. Why?

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  13. Suluphur has a strong tendency for catenation than oxygen. Why?

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  14. Hydrocarbons are used as fuels. Why?

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  15. Name the anhydride of sulphurous acid. Why is it called so?

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  16. Sulphuir dioxide 'SO2' is, a reducing agent. Why?

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  17. Hot concentrated sulphuric acid is a strong oxidising agent. Why?

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  18. Fluorine does not show higher positive oxidation states. Why?

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  19. Arrange HF, HCI, HBr and HI in the order of their i dipole moments. ii...

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  20. In presence of moisture, 'C l2' acts as a powerful oxidising agent. Wh...

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