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Nitrogen (Z=7) is the element of group V...

Nitrogen (Z=7) is the element of group V of the periodic table. Which of the following is the atomic number of the next element in the group ?

A

9

B

14

C

15

D

17

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VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PERIODIC TABLES-EXERCISE
  1. In period 2 element X is to the right of element Y . Then , ...

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  2. Number of elements present in period - 2 of the long form per...

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  3. Nitrogen (Z=7) is the element of group V of the periodic table. Which...

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  4. Electonic configuration of an atom is 2,8,7, . To which of the ...

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  5. Which of the following is the most active metal ?

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  6. Aluminium does not react with water at room temperature but r...

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  7. How can you explain Aluminium (Al) is a metalloid with chemical equati...

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  8. What relation about elements did dobereiner want to establish ?

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  9. The densities of calcium (ca ) and barium (Ba ) are 1.55 and 3.5...

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  10. All akali metals are solids but hydrogen is a gas with diatomic...

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  11. IF lanthanides and actinides are inserted within the table . Im...

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  12. Do you know why Newlands proposed the law of octaves ? Explain...

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  13. Why did Mendeleeff had to leave certain blank spaces in his per...

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  14. What is your understanding about Ea (2 ) O(3 ) , EsO(2) ?

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  15. Second ionization energy of an element is higher than its firs...

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  16. The calculated electron gain enthaly values for alkaline earth m...

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  17. Do you think Newland's law of octaves is correct ? Justify .

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  18. Why are lanthanides and actinides placed separately at the bot...

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  19. The second period element , for example , for example 'F' has ...

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  20. Observe the following table and Fill it . Observations ...

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