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The HNH angle is higher than HPH, HAsH a...

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

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The central atom `epsilon` (where, `epsilon` = N, P, As, Sb, Bi) in all given hydrides is `"Sp"^(3)` hybridized However, its electronegativity decreases and atomic size increase on moving down the group. Therefore is a gradual decrease in the force of repulsion between the shared electron pairs around the central atom. Thus, bond angle decreases as we move down the group.
`{:("Molecule",,"NH"_(3),,"PH"_(3),,"AsH"_(3),,"SbH"_(3),,"BiH"_(3)),("Bondangle",,107.8^(@),,93.6^(@),,91.8^(@),,91.3^(@),,90^(@)):}`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-P-BLOCK ELEMENTS -GROUP 15 ELEMENTS (VERY SHORT ANSWER QUESTIONS)
  1. What happens when white phosphorus is heated with conc. NaOH solution ...

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

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

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  4. How do calcium phosphide and heavy water react ?

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

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

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

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  8. Give the resonating structures of NO(2) and N(2)O(5).

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  9. Why does R(3)P=O exist but R(3)B=O does not (R = alkyl group) ?

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  10. How is nitric oxide (NO) prepared ?

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  11. Give one example each of normal oxide and mixed oxide of nitrogen.

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  12. NO is paramagnetic in gaseous state but diamagnetic in liquid and soli...

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  13. Give an example of acidic oxide of phosphorus

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  14. Give an example of neutral oxide of nitrogen.

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  15. Explain the following reaction of alkali with red phosphrous.

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  16. Explain the following reaction between "PCl"(3) and H(3)PO(3).

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  17. How does "PCl"(3) react with "CH"(3)"COOH"

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  18. How does "PCl"(3) react with "CH"(3)"COOH"

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  19. How does "PCl"(3) react with water.

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  20. PCl(3) can act as an oxidizing as well as a reducing agent - Justify.

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