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Why is Bi(V) a stronger oxidant than Sb(...

Why is Bi(V) a stronger oxidant than Sb(V) ?

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As we go down a group, the stability of + 3 oxidation state increases as compared to +5 oxidation state due to inert pair effect. Therefore, Bi(V) will readily take up two electrons to change into Bi(III) and thus, behave as an oxidant. In the case of Sb(V), conversion from +5 state +3 state does not take place readily. Hence, Bi(V) is a stronger oxidant than Sb(V).
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(a) Account for the following observations : (i) SF_(4) is easily hydrolysed whereas SF_(6) is not easily hydrolysed. (ii) Chlorine water is a powerful bleaching agent. (iii) Bi (V) is a stronger oxidising agent than Sb(V) (b) What happens when : (i) White phosphorus is heated with concentrated NaOH solution in an inert atmosphere of CO_(2). (ii) XeF_(6) undergoes partial hydrolysis. (Give the chemical equations involved).

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ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Which is least basic ? SbH(3)PH3,NH3,AsH3

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  2. Draw the structure of XeF(2)

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  3. Among the noble gases only xenon is well known to form chemical compou...

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  4. Assign reason for the following: In solid state, PCI5 , behaves as an ...

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  5. Are all the five bonds in PCl(5) molecule equivalent? Justify your ans...

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  6. Complete the following reactions : (i) P4 + SOCl2 rarr

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  7. Complete the following reactions : (ii) CH3COOH + PCl5 rarr

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  8. What happens when (write balanced chemical equations): Ammonia is ...

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  9. In which one of the two structures, NO(2)^(+) and NO(2)^(-) the bond a...

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  10. Why is the bond angle in PH(3) molecule lesser than that in NH(3) mole...

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  11. Answer the following : (i) Which neutral molecule would be isoelectr...

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  12. Why is Bi(V) a stronger oxidant than Sb(V) ?

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  13. Why is red phosporus less reactive than white phosphorus?

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  14. In the ring test for identification of nitrate ion, what is the formul...

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  15. Write the balanced equation for complete hydrolysis of XeF6.

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  16. In what way can it be proved that PH(3) is basic in nature?

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  17. Draw the structure of O(3) molecule.

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  18. Explain the following observations : (i) Fluorine does not exhibit a...

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  19. Nitrogen is relatively inert as compared to phosphorus. Why ?

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  20. Comment on the nature of two S–O bonds formed in SO(2) molecule. Are t...

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