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Explain the following : (i) NO(2) read...

Explain the following :
(i) `NO_(2)` readily forms a dimer.
(ii) `BiCl_(3)` is more stable than `BiCl_(5)`.

Text Solution

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(i) It is because `NO_(2)` contains odd number of valence electrons. On dimerisation, it is converted to stable `N_(2)O_(4)` molecule with even number of electrons.
(ii) In group - 15 the stability of `+5` oxidation state decreases and that of `+3` oxidation state increases due to inert pair effect. Thus, `BiCl_(3)` is more stable than `BiCl_(5)`.
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OSWAAL PUBLICATION-P - BLOCK ELEMENTS-TOPIC - 1 (GROUP - 15 ELEMENTS, THEIR PROPERTIES AND SOME IMPORTANT COMPOUNDS)(SHORT ANSWER TYPE QUESTIONS)
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  2. Why does R(3)P = O exist but R(3)N = O does not (R = alkyl group) ?

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

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  4. Nitrogen exist diatomic molecule and phosphorus as P(4). Why ?

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  5. Why does nitrogen show catenation properties less than phosphorus ?

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  7. What happens when PCl(5) is heated?

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  9. Are all the five bonds of PCl(5) equivalent ? Justify your answer.

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  12. Give the disproportionation reaction of H(3)PO(3).

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