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Thermodynamically most stable allotrope ...

Thermodynamically most stable allotrope of phosphorus is :

A

Red

B

White

C

Black

D

Yellow

Text Solution

Verified by Experts

The correct Answer is:
B
Black phosphours has layered structure like graphite and has highest ignition temperature `( gt 673K)`.
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RESONANCE-P BLOCK ELEMENTS-ALP PART 1 OBJECTIVE
  1. (NH(4))(2)Cr(2)O(7) on heating gives a gas which is also given by :

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  2. A pale bule liquid is obtained by equuimolar mixture of two gases at -...

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  3. Thermodynamically most stable allotrope of phosphorus is :

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  4. There are some deposits of nitrated and phosphates in the earth's crus...

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  5. There are some deposits of nitrated and phosphates in the earth's crus...

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  6. There are some deposits of nitrates and phosphates in the earth's crus...

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  7. The reaction of P(4) with X leads selectively to P(4)O(6) The X is :

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  8. Match each of the reaction given in Column I with the corresponding pr...

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  9. Extra pure N2 can be obtained by heating

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  10. Which ordering of compounds is according to the decreasing order of th...

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  11. Amongest H(2)O,H(2)S,H(2)Se and H(2) Te the one with highest boiling ...

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  12. The number of S-S bonds, in sulpher trioxide trimer (S(3)O(9)) is :

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  13. Which of the following oxoacids of sulpher has -O-O- linkage ?

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  14. Which of the following will not be oxidised by O(3)?

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  15. Which gas is evolved when PbO(2) is treated with conc HNO(3) ?

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  16. Aqueous solution of Na(2)S(2)O(3) on reaction with CI(2), gives

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  17. Assign a reason for each of the following : (I) SCl(6) is not known ...

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  18. Bismuth is a strong oxidizing agent in the pentavalent state. Or penta...

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  19. H(3)PO(3) is diprotic (or dibasic). Why ?

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  20. How will you account for the following ? Bi(2)O(3) is not acidic in ...

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