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Al(2)O(3)+N(2)+Crarr X+CO, X+H(2)Orarr...

`Al_(2)O_(3)+N_(2)+Crarr X+CO`,
`X+H_(2)Orarr Y+Z`
'Y' is an amphoteric substance. When aqueous 'Z' is treated with `AICI_(3)` solution again 'Y' is formed. What are X, Y and Z? 

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`X = AlN`, which on hydrolysis gives Al(OH), and ammonia. `Y = Al(OH)_(3) and Z=NH_(3)`
  Ammonium chloride precipitates aluminium hydroxide with aqueous ammonia.
`AlCl_(3)+3NH_(4)OH rarr Al(OH)_(3)+3NH_(4)Cl`
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AAKASH SERIES-GROUP 15 ELEMENTS-EXERCISE - 1.2
  1. Al(2)O(3)+N(2)+Crarr X+CO, X+H(2)Orarr Y+Z 'Y' is an amphoteric su...

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  2. Discuss the structure and bonding in P(4) molecule.

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  3. What is allotropy ? Give the allotropes of oxygen.

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  4. Comment on the M-M bond strengths and catenation ability of group 15 e...

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  5. Elemental phosphorus is not diatomic like nitrogen. Explain.

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  6. Write the difference between the properties of white phosphorus and re...

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

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

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

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

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

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  12. Nitrogen forms several oxides. Why?

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

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

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

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

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

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  18. Discuss the structure and basicity of orthophosphorus acid.

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

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

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

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