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Explain : NCl5 does not exists but PCl...

Explain :
`NCl_5` does not exists but `PCl_5` exists.

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UNITED BOOK HOUSE-QUESTION PAPER 2016-EXERCISE
  1. Arrange the following compounds according to their increase of melting...

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  2. Which one is more polar NF3 or NH3? Explain

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  3. Explain : NCl5 does not exists but PCl5 exists.

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  4. How would you explain BaO is soluble but BaSO4 is insoluble is water.

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  5. Why the falling liquid drop is spherical in nature?

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  6. In a 10 litre volumetric flask contains 1 gram He and 6.4 and gram O2 ...

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  7. If the standard formation enthalpy of CS2, CO2 and SO2 are 117 kJ mol^...

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  8. Write Hess's law.

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  9. Judge the spontaneity of the following reaction at 298 K temperature a...

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  10. Mention the oxidation number of two chlorine atoms in Ca(OCl)Cl molecu...

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  11. Balance by oxidation number method P4 +NaOH + H2O rarr NaH2 PO2 + PH3...

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  12. What is the oxidation number of N atom is NaN3 molecule?

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  13. Balance the following chemical equation by ion electron method : MnO...

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  14. A water sample contains 1 millimole ofMg^(2+) ion per litre. calculate...

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  15. What do you understand by "Trailing of Mercury?

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  16. What do most of the lithium salts are present as hydrate one?

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  17. Which of the alkaline earth metal hydroxide are amphoteric in nature.

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  18. What is hydrohlith?

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  19. Why does BF3 behave as Lewis acid?

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  20. Write with equation what happens when? Water is added to calcium carbi...

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