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Nitrogen forms a simple diatomic molecul...

Nitrogen forms a simple diatomic molecule but other elements of same group do not form. Explain.

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Atomic size of nitrogen is very less. Hence 'N' atom can approach close to another 'N' atom. This facilitates the lateral overlap of the p-orbitals forming `pi-` bonds.
Due to large size, other atoms of the same group form only single bonds, but not multiple bonds.
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RESONANCE-NITROGEN & OXYGEN FAMILY-Exercise 1
  1. Nitrogen forms a simple diatomic molecule but other elements of same g...

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  2. White phosphorus is very reactive, but not the red one. Why ?

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

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

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

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

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

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

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

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

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

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

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

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

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

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  16. What happens when barium azide is heated ?

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

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

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

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

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