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The positions of three elements P, Q and...

The positions of three elements P, Q and R in the periodic table are shown below

Which of these three elements is most non-metallic ?

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In general, the non-metallic character of the elements increases along period and decreases down the group. Therefore, Q is the most non-metallic element out of the given list.
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DINESH PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-Short Ansewer Questions
  1. The atomic number of three elements are given below : Write the s...

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  2. Write two reasons responsible for the late discovery of noble gases.

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  3. The positions of three elements P, Q and R in the periodic table are s...

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  4. Examine elements of the third period : Na, Mg, Al, Si, P, S, Cl, Ar an...

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  5. Two elements M and N belong to group I and II respectively and are in ...

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  6. In the modern periodic table calcium (atomic number 20) is surrounded ...

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  7. The elements of group eighteen of the periodic table are given (i) T...

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  8. Explain the variation in the following properties of the elements in t...

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  9. Na, Mg and Al are the elements having one, two and three valence elect...

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  10. Arrange the following elements in the descending order of atomic size ...

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  11. The following table shows the positions of six elements A, B, C, D, E ...

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  12. Given below are some elements of the modern periodic table : ""(4)Be...

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  13. The elements Li, Na and K, each having one valence electron, are in pe...

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  14. An element X (atomic number 17) combines with an element. Y (atomic nu...

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  15. Two elements X and Y have atomic number 12 and 17 respectively. (i) ...

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  16. Calcium forms the following salts : Calcium oxide -CaO, Calcium hydr...

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  17. The atomic number of K and Ca is 19 and 20 respectively and they belon...

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  18. Lithium, sodium and potassium are placed in the same group on the basi...

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  19. (a) Name metals among first five elements of the Modern Periodic Table...

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  20. As we move across a period in the periodic table, what is the gradatio...

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