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Why are pentahalides more covalent than ...

Why are pentahalides more covalent than trihalides ?

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Higher the positive oxidation state of central atom, more will be its polarising power which, in turn, increases the covalent character of bond formed between the central atom and the other atom.
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NCERT TELUGU-THE P-BLOCK ELEMENTS -INTEXT QUESTION
  1. Why are pentahalides more covalent than trihalides ?

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  2. Why is "BiH"(3) the strongest reducing agent amongst all the hydrides ...

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  3. Why is N(2) less reactive at room temperature ?

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  4. Mention the conditions required to maximise the yield of ammonia.

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  5. How does ammonia react with a solution of "Cu"^(2+) ?

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  6. What is the covalence of nitrogen in "N"(2)"O"(5) ?

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  7. Bond angle in "PH"(4)^(" "+) is higher than that in "PH"(3). Why ?

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  8. What happens when white phosphorus is heated with concentrated NaOH s...

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  9. What happens when "PCl"(5) is heated ?

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  10. Write a balanced equation for the hydrolytic reaction of PCl(5) in hea...

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  11. What is the basicity of H(3)PO(4) ?

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  12. What happens when H(3)PO(3) is heated

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  13. List the important sources of sulphur.

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  14. Write the order of thermal stability of the hydrides of group 16 eleme...

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  15. Why is H(2)O a liquid and H(2)S a gas ?

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  16. Which of the following does not react with oxygen directly ? Zn, Ti, P...

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  17. Complete the following reactions: (i) C(2)H(4)+O(2) to (ii) 4Al+3O...

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  18. Why does O(3) act as a powerful oxidising agent ?

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  19. How is O(3) estimated quantitatively ?

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  20. What happens when sulphur dioxide is passed through an aqueous solutio...

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