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The electronic configuration of an eleme...

The electronic configuration of an element is 2, 8, 4. State its,
(a) group and period in the Modern Periodic Table. (b) name and write its one physical property.

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(a)Group =14 , Period =3
(b)Silicon
It is a metalloid , poor conductor of electricity
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OSWAL PUBLICATION-DIKSHA QUESTIONS -PERIODIC CLASSIFICATION OF ELEMENTS (SHORT ANSWER)
  1. The atomic number of an element is 16. Predict the number of valence e...

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  2. The atomic number of an element is 16. Predict its valency

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  3. The atomic number of an element is 16. Predict its group number

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  4. The atomic number of an element is 16. Predict whether it is a metal o...

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  5. The atomic number of an element is 16. Predict the nature of oxide for...

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  6. The atomic number of an element is 16. Predict the formula of its chlo...

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  7. F, Cl and Br are elements each having seven valence electrons. Which o...

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  8. In the modern periodic table, the element calcium (atomic number = 20)...

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  9. How does the metallic character of elements change on going from left ...

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  10. Can the following groups of elements be classified as Dobereiner's tri...

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  11. An atom has electronic configuration 2, 8, 7. (a) What is the atomic n...

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  12. The electronic configuration of an element is 2, 8, 4. State its, (a...

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  13. How it can be proved that the basic structure of the Modern Periodic T...

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  14. Name the element which has one shell only which is completely filled w...

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  15. Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to...

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  16. Give reasons - K atom is bigger than Na atom even though both these ...

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  17. An element X belongs to group 17 and third period of the periodic tabl...

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  18. An element X belongs to group 17 and third period of the periodic tabl...

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  19. An element X belongs to group 17 and third period of the periodic tabl...

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  20. Arrange the following elements in the increasing order of their: (i...

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