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What happens when : (i) What is basici...

What happens when :
(i) What is basicity of `H_3PO_3` and why ?
(ii) Why does fluorine not play the role of central atomo in inter halogen compunds ?

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(a) what happens when (i) Chlorine gas is passed though a hot concentrated solution of NaOH? (ii) sulphure dioxide gas is passed through an aqueses solution of Fe (III) salt? (b) Answer the following : (i) what is the basicity of H_(3) PO_(3) and why?. (ii) why does fluorine not pay the role of a central atom in interhalogen compounds ? (iii) Why do noble gases have very low boiling points ?

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ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(LONG ANSWER QUESTIONS)
  1. Account for the following : The acidic strength decreases in the ord...

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  2. Arrange the following in the order of property indicated for each set:

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  3. Account for the following : Write balanced equation for the reaction...

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  4. Account for the following : (i) Oxygen does not show an oxidation st...

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  5. Draw the structure of XeF4 molecule.

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  6. Account for the following : . Complete and balance the chemical equa...

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  7. (a) Explain the following : (i) NF3 is an exothermic compound where...

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  8. Explain the following: Complete the following chemical equations : ...

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  9. (a) Given reasons for the following : (i) Bond enthalpy of F2 is low...

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  10. Complete the following chemical equations : (i) HgCl2 + PH3 rarr (...

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  11. (a) what happens when (i) Chlorine gas is passed though a hot conc...

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  12. What happens when : (i) What is basicity of H3PO3 and why ? (ii) W...

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  13. Why do members of the noble gas family have low boiling points ?

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  14. (a) Given reasons for the following : (i) Bond enthalpy of F2 is low...

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  15. (a) Given reasons for the following : (i) Bond enthalpy of F2 is low...

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  16. Account for the following : (i) Helium is used in diving apparatus. ...

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  17. Draw the structures of the following : (i)XeO(3) (ii)H(2)SO(4)

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  18. Draw the structure of the following : (i) H2SO4 (ii) XeF2

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  19. Write main differences between the properties of white phosphorus and ...

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  20. Account for the following : (i) PCl(5) is more covalent than PCl(3)...

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