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An atom of an element has electronic con...

An atom of an element has electronic configuraiton 2,8,7. To which group does it belong? Name the family name, if any.

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MODERN PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-EXAMPLE
  1. In a periodic table How would the tendency to gain electrons change as...

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  2. In a periodic table How would the tendency to gain electrons change as...

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  3. An atom of an element has electronic configuraiton 2,8,7. To which gro...

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  4. Which of the following belongs to same period same group?

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  5. The third period of the long form of periodic table contains the follo...

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  6. The third period of the long form of periodic table contains the follo...

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  7. Three elements X,Y and Z belong to groups 2,15 and 17 respectivley. Pr...

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  8. Three elements X,Y and Z belong to groups 2,15 and 17 respectivley. Pr...

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  9. A part of the periodic table is given below. The elements sodium, carb...

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  10. A part of the periodic table is given below. The elements sodium, carb...

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  11. Did doberiner's triads also exist in the columns of newlands's octaves...

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  12. What were the limitations of deberiner's calssification?

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  13. What were the limitations of newland's law of octaves?

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  14. Besides gallium which other elements have since been discovered to fil...

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  15. What were thae criteria used by Mendeleev in creating his periodic tab...

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  16. Why do you think the noble gases are placed in a separate group?

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  17. How could modern periodic table remove various anomallies of mendeleev...

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  18. Name two elements you would expect to show chemical reactions similar ...

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  19. Name three elements that have only a single electron in their outermos...

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  20. Name two elements that have two electrons in their outermost shells

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