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Explain, why stability of +5 oxidation s...

Explain, why stability of +5 oxidation state decreases down the group 15 of the periodic table?

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SHARAM PUBLICATION-GROUP 15 ELEMENTS (NITROGEN FAMILY-EXERCISE
  1. Why is NH3 more basic than PH3 ?

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  2. Account for the Phosphorous shows high tendency for catenation

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  3. Explain, why stability of +5 oxidation state decreases down the group ...

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  4. Why is H3PO3 dibasic , even though it contains three H-atoms ?

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  5. Why does metallic character of Gr 15 elements increases down the group...

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  6. On moving down the group, the covalent and ion radii increases with in...

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  7. Why does nitrogen exist as a diatomic molecule and is a gas at room te...

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  8. What happens when aqueous solution of NH3 reacts with AlCl3 solution ?

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  9. What happens when dil NH4OH is added to AgCl precipitate ?

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  10. What are the favourable conditions for synthesis of NH3 by Haber's pro...

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  11. The b.p of hydrides of Group 15 increase regularly as we move from PH3...

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  12. Explain why the reducing power for the hydrides of Gr-15 increases dow...

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  13. NF3 is stable, but NCl3 NBr3 and NI3 are unstable. Why ?

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  14. What is the action of SbCL3 and NCl3 with water ?

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  15. Why does nitrogen show anomalous behaviour ?

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  16. What happens when ammonium dichromate is heated ?

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  17. What is the action of N2 with calcium carbide ?

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  18. What happens when dilNH4 OH is added to CrCl3 solution ?

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  19. How is NH3 converted to urea ?

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  20. What happens when NH3 is passed over molten sodium ?

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