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d and f-Block Elements Test - 3
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  • Question 1/7
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    Electronic configurations of different elements are given below in the options. Based on their electronic configurations, choose the one having the highest ionisation energy.

  • Question 2/7
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    Copper, in the aqueous solutions of its salts, almost invariably exists in the +2 oxidation state because

  • Question 3/7
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    Choose the correct statement(s) about manganese from among the following:

    a. Mn3+ is a reducing agent in its aqueous solution.
    b. The oxidation state of manganese in its fluoride is +4 (MnF4).
    c. The oxidation state of manganese is observed in its fluorides because the electronegativity of fluorine is the highest.

  • Question 4/7
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    To which of the following categories will the given reaction belong?

    2Cu+ → Cu + Cu2+

  • Question 5/7
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    An aqueous solution of KCN is added to a solution of ferrous salt. The complex formed is presented by

  • Question 6/7
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    Some elements of 3d series are shown in the options. Choose the pair of elements with the highest and lowest melting points, respectively.

  • Question 7/7
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    A metal gives two chlorides X and Y. X gives black precipitate with NH4OH and Y gives white. With KI, Y gives red precipitate, which is soluble in excess of KI. X and Y respectively are

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