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d and f-Block E...

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  • Question 1
    1 / -0

    Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

    Assertion (A): Cu2+ iodide is not known.

    Reason (R): Cu2+ oxidises I– to iodine.

  • Question 2
    1 / -0

    Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

    Assertion (A): Transition metals have low melting points.

    Reason (R): The involvement of greater number of (n – 1)d and ns electrons in the interatomic metallic bonding.

  • Question 3
    1 / -0

    Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

    Assertion: Separation of Zr and Hf is difficult.

    Reason: Because Zr and Hf lie in the same group of the periodic table.

  • Question 4
    1 / -0

    Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

    Assertion (A): Chemistry of Actinoids is more complicated than Lanthanoids.

    Reason (R): Actinoid elements are radioactive in nature.

  • Question 5
    1 / -0

    Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

    Assertion (A): The highest oxidation state of osmium is +8.

    Reason (R): Osmium is a 5d-block element.

  • Question 6
    1 / -0

    Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

    Assertion (A): Cu cannot liberate hydrogen from acids.

    Reason (R): Because it has positive electrode potential.

  • Question 7
    1 / -0

    Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

    Assertion (A): Transition metals have high melting point.

    Reason (R): Transition metals have completely filled d-orbitals.

  • Question 8
    1 / -0

    Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

    Assertion (A): Chromium is an actinoid.

    Reason (R): In Chromium, 3d orbitals are filled.

  • Question 9
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    Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

    Assertion (A): Cerium (Ce) exhibits +4 oxidation state.

    Reason (R): Ce4+ has 4f4 electronic configuration which is less stable.

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