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Nitrogen is trivalent, but phosphorus is...

Nitrogen is trivalent, but phosphorus is pentavalent in its compounds. Explain. 

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AAKASH SERIES-GROUP 15 ELEMENTS-EXERCISE - 1.2
  1. Write the difference between the properties of white phosphorus and re...

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  2. Mention the oxidation numbers exhibited by nitrogen. Give an example f...

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  3. Nitrogen is trivalent, but phosphorus is pentavalent in its compounds....

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  4. PH(3) is stable in air, but catches fire when heated at 425K. Why?

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  5. Discuss the stability of hydrides of group 15 elements.

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  6. Write the trends in bond length, bond angle, and boiling points of MH(...

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  7. Nitrogen forms several oxides. Why?

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  8. Nitrous oxide supports combustion more vigorously than air. Why?

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  9. In case of phosphorus trihalides, bond angle increases from PF(3) to P...

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  10. NH(3) and NF(3) are both pyramidal. What observations are made on the ...

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  11. The correct order of bond angles is NO(2)^(+) gt NO(2) gt NO(2)^(-) . ...

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  12. Copper metal gives different products on reaction with nitric acid. Il...

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  13. Discuss the structure and basicity of orthophosphorus acid.

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  14. Draw the structures of -ous acids of phosphorus and discuss their redu...

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  15. What hapens when the following are heated? (a) orthophosphoric acid ...

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  16. Nitrogen behaves abnormally from the other elements of the same group....

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  17. Trimethylamine is a stronger base than trisilylamine. Justify.

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  18. What is the ratio of product gases, nitric oxide and nitrogen dioxide ...

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  19. Concentrated nitric acid turns yellow in sunlight. Why?

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  20. How the products of oxidation of metals with nitric acid depend?

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