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Identify the group 15 elements (s) which...

Identify the group 15 elements (s) which correspond to the following description.
(a) exists mainly in `+3` oxidation state.
(b) is a gas at room temperature
(c ) forms a basic oxide
(d) is the most abundant element in the atmosphere.

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(a) Bi (b) N (c )Bi (d) N.
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DINESH PUBLICATION-THE P-BLOCK ELEMENTS -Problems For Practice
  1. Name the product when iodine is heated with concentrated HNO(3).

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  2. Name the compound of N with oxidation state -3 " and " +2.

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  3. Identify the group 15 elements (s) which correspond to the following d...

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  4. In the ring test for NO(3)^(-) ion, what is the chemical formula of th...

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  5. Which oxide of nitrogen becomes brown when released in air ?

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  6. What are the shapes of PH(3) molecule and PH(4)^(+) ion ?

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  7. What is the maximum oxidation state shown by nitrogen in its compounds...

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  8. What is the nature of N^(3-) ion ?

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  9. Apart from N(2)O which other colourless gas supports combustion ?

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  10. What is the nature of the following reaction ? P(4)+3NaOH+3H(2)O to ...

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  11. How many (P-O) bonds are present in (i) P(4)O(6) (ii) P(4)O(10) ?

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  12. Out of O(2) " and " O(3) which is a better oxidising agent ?

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  13. What is the shape of ozone molecule ?

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  14. Select the acidic and basic anhydrides from the following : (i) Na(2...

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  15. Give two examples of mixed oxides.

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  16. What is the nature of the following oxides : (i) CO (ii) Al(2)O(3) (...

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  17. What happends when water is dropped over Na(2)O(2) ?

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  18. Why is O(3) more reactive than O(2) ?

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  19. Name two compounds in which oxygen has oxidation states different from...

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  20. How does sulphur normally exist ?

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