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A part of the periodic table is given be...

A part of the periodic table is given below. The elements sodium, carbon, chlorine and argon have been placed in their correct positions. The positions of other elements are represented by hypothetical letters.

With reference to the table answer the following
Which element has largest size in the second period?

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MODERN PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-EXAMPLE
  1. Three elements X,Y and Z belong to groups 2,15 and 17 respectivley. Pr...

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

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

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

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

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

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

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

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

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

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

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

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

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  14. Name: three elements with filled outermost shells

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  15. Lithium, sodium, potassium are all metals that react with water to lib...

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  16. Helium is an unreactive gas and neon is gas of extermely low reactivit...

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  17. In the modern periodic table which are the metals among the first ten ...

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  18. By considering their position in the periodic table, which one of the ...

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  19. Which of the following statements Is not a correct statement about the...

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  20. Which element has: Two shells both of which are completely filled wit...

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