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NDA - Periodic Table Test 1412
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  • Question 1/5
    1 / -0.33
    For the first six periods of the periodic table, the noble gases are exactly the members of group________of the periodic table.

  • Question 2/5
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    Which of the following arrangement of elements in the modern periodic table is-
  • Question 3/5
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    Which element was not known when Mendeleev proposed his classification?
  • Question 4/5
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    Which of the following is the correct order of the atomic radii of the elements oxygen, fluorine, and nitrogen?
  • Question 5/5
    1 / -0.33
    What happens to the electropositive character of elements on moving from left to right in a periodic table?

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