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Give reasons: Penta-halides are more cov...

Give reasons: Penta-halides are more covalent than trihlaides.

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ASSAM ACADEMIC CENTRE-The p-Block Elements-Example
  1. Negative electron gain ethalpy of fluorine atom is less than that of c...

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  2. Explain the following observations: hydrogen fluoride has a much highe...

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  3. Give reasons: Penta-halides are more covalent than trihlaides.

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  4. Why is BiH3 the strongest reducing agent among all the hydrides of gro...

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  5. Why is N2 less reactive at room temperature?

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

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  7. What is the covalence of N2O5?

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  8. Bond angle in PH4^+ is higher than that is PH3.

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  9. What happens when white Phosphourous is heated with NaOH solution in a...

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  10. What happens when: PCI5 is heated strongly?

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  11. Write a balanced equation for the hydrolytic reaction of PCI5 in heavy...

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  12. What is the basicity of H3PO4?

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  13. What happens when H3PO3 is heated?

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  14. List the important sources of sulphur.

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  15. How will you account for the following: Among the hydrides of group 16...

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  16. Answer the following: Why H2O is a liquid whereas H2S is gas at room t...

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

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  18. Complete the following reactions: C2H4 + O2 rarr

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  19. Complete the following reactions: 4Al + 3O2 rarr

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  20. Why does O3 act as a powerful oxiding agent? How is O3 estimated quant...

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