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Chemistry Test ...

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  • Question 1
    4 / -1

    The qualities of eka-aluminium predicted by Mendeleev are the same as the properties of the element aluminium, which was discovered later.

  • Question 2
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    An atom of an element has the electrical configuration 2,6 when it is in its pure state. Is it a member of any particular group?

  • Question 3
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    Which among the following elements has maximum atomic radius ?

  • Question 4
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    What is the mass of carbon dioxide which contains the same number of molecules as are contained in 40 g of oxygen?

  • Question 5
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    The following quantum numbers are possible for how many orbital (s) n = 3, l = 2, m = +2 ?

  • Question 6
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    Which molecule is depicted by the given ball and stick models?

  • Question 7
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    The relative atomic masses of all elements have been found with respect to an atom of ________.

  • Question 8
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    Which species has the largest size?

  • Question 9
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    What is the electronic configuration of carbon in its excited state?

  • Question 10
    4 / -1

    Gaps were left in Mendeleev’s Periodic Table to allow for the discovery of new elements in the future. Which of the following elements did not find a place in the Periodic Table until much later in history?

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