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R(3) P = O exists but R(3) N = O does ...

`R_(3) P = O` exists but `R_(3) N = O` does not - why ?

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Due to absence fo d - orbitals, N is unable to expand its very valency beyond 4,
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CHHAYA PUBLICATION-P-BLOCK ELEMENTS-VERY SHORT ANSWER - TYPE QUESTIONS
  1. H(3)PO(2) possess reducing property - why ?

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  2. How can it be proved that PH(3) possess basic property ?

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  3. R(3) P = O exists but R(3) N = O does not - why ?

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  4. How does PCl(5) exist in the solid state ?

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  5. Phosphoric acid is syrupy liquid - why ?

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  6. Explain why BiH(3) is the strongest reducing agent among the hydri...

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  7. Which group-16 elements has the highest electronegativity ?

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  8. Which of the group-15 hydrides has the highest electronegativity ?

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  9. H(2)S is more acidic than H(2)O why ?

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  10. Mention the shape of SF(6) molecule.

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  11. Unlike sulphur , oxygen does not exhibit + 4 and = 6 states - why ?

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  12. Give example of two compounds one in which the oxidation state of ...

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  13. Given an example of a salts which produces dioxygen when heated.

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  14. Explain why SO(2) possesses considerbale reducing property.

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  15. What is oleum ?

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  16. Prove that fluorine is a stronger oxidising agent that chorine .

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  17. Give an example of a compound where oxidation state of CI is + 7.

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  18. Explain why HF is the weakest among the halogen hydracids even thou...

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  19. Explain why fluorine does not form F(3)^(-) ions.

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  20. Name a poisonous gas which can be prepared form CI(2) gas .

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