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Why does R3P=0 exist but R3N=0 does not?...

Why does `R_3P=0` exist but `R_3N=0` does not?

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R G PUBLICATION-THE p-BLOCK ELEMENTS-EXERCISE
  1. What will happen when: Aque regia reacts with platinum?

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  2. "Though size increases rapidly from N to P of group 15th elements but ...

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  3. Why does R3P=0 exist but R3N=0 does not?

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  4. Disuss the acidic characters of oxides of ni-togen and phoshorus.

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  5. How pure N2 gas is prepared in laboratory? Write the necessary equatio...

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  6. Discuss the optimum conditions for the manu-facture of ammonia.

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  7. How ammonia helps in the detection of metal ions is solution?

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  8. What will happen when lead nitrate is strongly heated? Write the neces...

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  9. How nitric acid is prepared by Ostwald method? Write the necessary rea...

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  10. Write two characteristics each from white phos-phorus and red phosphor...

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  11. Write the reaction for the laboratory prepara-tion of phosphine. How p...

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  12. What is Holme's signals? Write its use

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  13. Bond angle in PH4^+ is higher than that is PH3.

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  14. What is the hydridization of phosphorus atom in PCI3?

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  15. Give the disproporationation reaction of H3PO3.

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  16. Discuss the stability of various oxidation states of element of chalco...

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  17. How oxides are classified? Give one example of each oxide.

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  18. High concentration of ozone is highly explo-sive. Why?

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  19. Knowing the electron gain enthalphy values for OrarrO^- and O rarrO^2-...

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  20. Discuss the role of chemical factors which deptets ozone layer.

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