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Why are the compounds of bismuth more st...

Why are the compounds of bismuth more stable in +3 oxidation state ?

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Bismuth compounds are more stable in +3 oxidation state because 'Bi' exhibits +3 stable oxidation state instead of +5 due to inert pair efffect.
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-P-BLOCK ELEMENTS -GROUP 15 ELEMENTS (VERY SHORT ANSWER QUESTIONS)
  1. Why does nitroggen show catenation properties less than phosphorus ?

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  2. Nitrogen molecule is highly stable - Why ?

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  3. Why are the compounds of bismuth more stable in +3 oxidation state ?

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  4. What is allotropy ? Explain the different allotropic forms of phosphou...

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  5. How do you account for the inert character of dinitrogen ?

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  6. Explain the difference in the structures of white and red phosphorus.

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  7. How is alpha- black phosphorus prepared from red phosphorus ?

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

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  9. What is inert pair effect ?

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  10. Explain why is NH(3) basic while "BiH"(3) is only feebly basic.

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  11. Arrange the hydrides of group - 15 elements in the increasing order of...

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  12. PH(3) is a weaker base than NH(3) - Explain.

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  13. A hydride of group -15 elements dissolves in water to form a bbasic so...

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  14. What happens when white phosphorus is heated with conc. NaOH solution ...

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  15. NH(3) forms hydrogen bonds but PH(3) does not - why ?

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  16. The HNH angle is higher than HPH, HAsH and HSbH angles - Why ?

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  17. How do calcium phosphide and heavy water react ?

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  18. Ammonia is a good complexing agent - Explain with an example.

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  19. A mixture of "Ca"(3)"P"(2) and "CaC"(2) is used in making Holme's sign...

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  20. Which chemical compound is formed in the brown ring test of nitrate io...

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