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Why are pentahalides of P, As, Sb and Bi...

Why are pentahalides of P, As, Sb and Bi more covalent than their trihalides?

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Higher positive oxidation state of central atom has more polarising power which increases the covalent character.
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AAKASH INSTITUTE ENGLISH-THE P-BLOCK ELEMENTS-Try yourself
  1. Name one natural silicate and one synthetic silicate?

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  2. What is the hybridisation of silicon in orthosilicate?

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  3. Why are pentahalides of P, As, Sb and Bi more covalent than their trih...

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  4. Why is BiH(3) the strongest reducing agent amongst all the hydrides of...

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

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

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

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  8. (a) Bond angle in PH(4)^(+) is higher than that in PH(3). Why? (b...

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  9. What happens when white phosphorus is heated with concentrated NaOH so...

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

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  11. Write a balanced equation for the reaction of PCl(5) with water.

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

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  13. List the important sources of sulphur.

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

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  15. Write the order of thermal stability of the hydrides of Group 16 elem...

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  16. Anomalous behaviour of oxygen is due to

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  17. Which of the following does not react with oxygen directly? Zn, T...

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

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

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  20. How isO(3) estimated quantitatively?

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