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Periodic Classi...

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  • Question 1
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    Which of the following statements are true about the modern form of the periodic table?

  • Question 2
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    The valency of elements in the periodic table with respect to hydrogen:

  • Question 3
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    Which of the following pair of elements are expected to have similar properties according to Newland's law of octaves? 

  • Question 4
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    The Newland's law of octaves for the classification of elements was found to be applicable only up to the element ______________________.

  • Question 5
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    Which element has smallest atomic size?

  • Question 6
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    Which of the following set of elements is written in order of their increasing metallic character?

  • Question 7
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    If three elements $$X, Y,$$ and $$Z$$ form a Dobereiner's triad and atomic weights of $$X$$ and $$Z$$ are $$9$$ and $$40$$ respectively, then the atomic weight of the element $$Y$$ is approximate:

  • Question 8
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    The anomalous pairs in Mendeleev's periodic table is/are_______.

  • Question 9
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    The elements $$A$$ and $$B$$ obey Newland's law of octaves. How many elements are there between $$A$$ and $$B$$?

  • Question 10
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    The element placed with nickel in the table formed by Newlands was :

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