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How many periods in the modern periodic ...

How many periods in the modern periodic table?

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MAXIMUM PUBLICATION-CLASSIFICATION OF ELEMENTS AND THE PERIODIC TABLE-EXAMPLE
  1. Explain the limitation of Mendeleev's Periodic table?

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  2. State and explain modern periodic table and modern periodic law?

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  3. How many periods in the modern periodic table?

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  4. Which is the shortest period?

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  5. Number of elements in the third period?

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  6. Total number of groups?

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  7. Explain representative elements?

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  8. Do in representative elements do they include metalloids [eg. Si, Ge, ...

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  9. Are there elements existing in solid, liquid and gaseous state find ex...

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  10. Write the electronic configuration of elements with atomic number 1-10

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  11. List the elements in group 18

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  12. write electronic configuration of group 18 elements

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  13. How many electrons are there in the outermost shell of each element?

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  14. The elements do not normally take part in chemical reactions. Find the...

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  15. Which group of elements belong to transition elements?

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  16. Find out whether elements familiar to you are present in these groups?

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  17. Aren't transition elements metals?

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  18. What are the characteristics of transition elements?

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  19. Which element is next to lanthanum with atomic number 57 of group 6 in...

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  20. Find out the position allotted to the elements with atomic number 58-7...

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