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The maximum number of covalent bonds for...

The maximum number of covalent bonds formed by nitrogen is 4.

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Nitrogen has three unpaired electrons and one lone pair of electrons in the valence shell. Therefore, nitrogen can form three normal covalent bonds and one coordinate bond.
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ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Write the names and symbols of the group 15(VA) elements.

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  2. Write the electronic configuration of group 15 elements

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  3. The maximum number of covalent bonds formed by nitrogen is 4.

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  4. Why the elements of the second row (first short period)? exhibit a nu...

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  5. Which of the following is/are not known? (i) PCl3 , AsCl3 , SbCl3 ,...

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  6. Write chemical equation for thermal decomposition of ammonium dichroma...

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  7. Account for the fact that ammonia is a good complexing agent.

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  8. Why is phosphoric acid syrupy?

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  9. Name two oxoacids of nitrogen and write the oxidation state of nitroge...

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  10. What is the difference between the nature of pi-bonds present in H3PO3...

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  11. Name three allotropes of phosphorus. Which out of these is most reacti...

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  12. Why is white phosphorus stored under water?

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  13. How is pyrophosphoric acid related to orthophosphoric acid?

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  14. Give reasons for the following : (i) Nitric oxide become brown on ex...

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  15. Give reasons for the following : NO2 is considered a mixed anhydride.

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  16. What is the basicity of phosphorus acid ?

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  17. Name the series of salts that are formed by orthophosphoric acid with ...

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  18. What is the state of hybridization of nitrogen in NO3^(-) ion ?

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  19. NO2 readily forms a dimer. Explain.

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  20. What is laughing gas ? How is it prepared?

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