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The important source of phosphorus is ph...

The important source of phosphorus is phosphorite rocks which is mainly phosphates. The same chemical compound is also present in bones. What is the formula of the compound(s)

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Phosphorite `Ca_(3) (PO_(4))_(2)` and fluoroapatite `Ca_(5) (PO_(4))_(3)F`
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RESONANCE-NITROGEN & OXYGEN FAMILY-Exercise 1
  1. White phosphorus is very reactive, but not the red one. Why ?

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  2. Which allotropic form of sulphur is thermodynamically stable at room t...

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  3. The important source of phosphorus is phosphorite rocks which is mainl...

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  4. Why is Bi(V) a stronger oxidant than Sb(V) ?

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  5. Nitrogen shows different oxidation states in the range to . It most s...

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  6. The tendency to exhibit -3 oxidation state by a group VA element decre...

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  7. Why sulphur in vapour state exhibits paramagnetic behaviour at above 8...

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  8. Write the following for a white phosphorus molecule (a) oxidation st...

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  9. Tellurium forms oxides of the formula TeO, TeO(2) and TeO(3). What is ...

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  10. Write the structure and oxidation number of sulphur in tetrathionate i...

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

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  12. Write the oxyacids of the following {:("Oxide","Oxyacids"),(N(2)O(3)...

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  13. N(2), CO, CN^(-) and NO^(+) are isoelectronic but the former is chemic...

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  14. On moving down the group from O to Te acidic strength increases, why ?

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  15. What happens when barium azide is heated ?

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  16. Which stable elements of 15^(th) and 16^(th) group do not react with w...

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  17. Chemiluminescence is a phenomenon in which on element glows in dark wh...

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  18. Among the hydrides of group 16, water shows unsual boiling point. Why ...

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  19. Ammonium salts generally resemble those of postassium and rubidium in ...

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  20. Write balanced equation when NH(3) is dissolves in (a) water (b) HCl...

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