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PCl5 and PH3 exist but PH5 does not beca...

`PCl_5` and `PH_3` exist but `PH_5` does not because

A

`PH_5` is unstable

B

Phosphorous has no vacant orbitals

C

Phosphorous exists as `P_4`

D

`EN` of hydrogen is less as compared to chlorine to excite electron from `p` orbital to `d` orbital for bond formation.

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The correct Answer is:
D
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CENGAGE CHEMISTRY ENGLISH-P-BLOCK GROUP 15 ELEMENTS - THE NITROGEN FAMILY-Exercises (Single Correct)
  1. Among the trihalides of nitrogen, which is the least basic ?

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  2. PCl5 exists but NCl5 does not because :

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  3. PCl5 and PH3 exist but PH5 does not because

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  4. The structure of phosphide ion is similar to that of

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  5. Calcium phosphide is used in smoke screen because it.

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  6. Holme's signals produce burning gases which serve as a signal to the a...

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  7. Among the following the strongest acid is

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  8. Basicity of H3 PO4 and H3 PO3 are

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  9. Phosphoric acid is syrupy in nature due to hydrogen bonding. Each mole...

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  10. PCl3, P4 O6 and P4 O10, PCl5 on hydrolysis gives respectivey.

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  11. If phosphorous acid is allowed to react with sufficient quantity of KO...

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  12. Which one of the following pairs is obtained on heating ammonium dichr...

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  13. By mixing ammonium chloride to potassium nitrite and heating, we get

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  14. In which salt,on heating gives a mixture of two gases is

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  15. Ammonia is not used

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  16. Which one of the following is used for drying of ammonia ?

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  17. Phosphorus is kept in

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  18. It is recommended that ammonia bottles be opened after cooling in ice ...

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  19. Silver chloride dissolves in excess of NH4OH. The cation present in so...

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  20. When NH4OH is added to copper sulphate solution, blue colour is obtain...

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