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Why is Helium used in diving apparatus?...

Why is Helium used in diving apparatus?

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  • The d and f-block elements

    ASSAM ACADEMIC CENTRE|Exercise Example|180 Videos

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ASSAM ACADEMIC CENTRE-The p-Block Elements-Example
  1. Name two poisonous gases which can be prepared from chlorine gas.

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  2. Why is ICL more reactive than I2?

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  3. Why is Helium used in diving apparatus?

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  4. Complete the following equation: XeF6 + H2O rarr.

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  5. Why has it been difficult to study the chemistry of radon?

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  6. Mention the general characteristics of groups 15 elements with referen...

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  7. Why does the reactivity of nitrogen differ from phosphorous?

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  8. Why does NH3 form hydrogen bond but PH3 does not?

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  9. How is nitrogen prepared in the laboratory? Write the chemical equatio...

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  10. How is ammonia manufactured industrially?

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  11. Illustrate how copper metal can give different products on reaction wi...

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  12. Give the reasonating structures of NO2 and N2O5.

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  13. Why does R3P=0 exist but R3N=0 does not?

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  14. Explain why NH3 is basic while BiH3 is only feebly basic.

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  15. Nitrogen exists as diatomic molecule and phosphorous as P4.

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

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  17. Why does Nitrogen show catenation properties less than phosphorus?

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  18. Write the disproportionation reaction of H3PO3.

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  19. Account for the following: Dioxygen is a gas but sulpher is a solid.

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  20. Knowing the electron gain enthalphy values for OrarrO^- and O rarrO^2-...

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