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d and f Block Elements

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

General introduction and electronic configuration

Subtopic

General introduction and electronic configuration under d and f Block Elements for Grade 12 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The transition series that includes the element Platinum (PtPt) is the:

    A.

    3d3d series

    B.

    4d4d series

    C.

    5d5d series

    D.

    6d6d series

  2. 2.

    The valence shell electronic configuration of Group 3 elements like Scandium is generally represented as:

    A.

    (n−1)d1ns2(n-1)d^1 ns^2

    B.

    (n−1)d2ns2(n-1)d^2 ns^2

    C.

    (n−1)d10ns2(n-1)d^{10} ns^2

    D.

    (n−1)d5ns1(n-1)d^5 ns^1

  3. 3.

    Which of the following elements is a liquid at room temperature and belongs to the dd-block?

    A.

    Bromine

    B.

    Gallium

    C.

    Mercury

    D.

    Cesium

Download the worksheet for d and f Block Elements - General introduction and electronic configuration to practice offline. It includes additional chapter-level practice questions.

Characteristics of transition metals

Subtopic

Characteristics of transition metals under d and f Block Elements for Grade 12 ICSE.

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Preview questions (no answers)

  1. 1.

    Transition metals like Iron (FeFe, Z=26Z=26) exhibit variable oxidation states by losing electrons from their outer 4s4s and inner 3d3d subshells. Based on the electron loss sequence provided in the flowchart, which of the following pairs represents the most common oxidation states of Iron?

    A.

    +1+1 and +2+2

    B.

    +2+2 and +3+3

    C.

    +3+3 and +4+4

    D.

    +5+5 and +6+6

  2. 2.

    Which of the following alloys contains a transition metal and a non-metal?

    A.

    Brass

    B.

    Bronze

    C.

    Steel

    D.

    Solder

  3. 3.

    Lanthanoid contraction is caused by:

    A.

    Perfect shielding of 4f electrons

    B.

    Poor shielding effect of 4f electrons

    C.

    Increase in atomic size

    D.

    Decrease in effective nuclear charge

Download the worksheet for d and f Block Elements - Characteristics of transition metals to practice offline. It includes additional chapter-level practice questions.

Variation in atomic and ionic radii

Subtopic

Variation in atomic and ionic radii under d and f Block Elements for Grade 12 ICSE.

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Preview questions (no answers)

  1. 1.

    Which of the following M2+M^{2+} ions has the smallest radius in the first transition series?

    A.

    Mn2+Mn^{2+}

    B.

    Fe2+Fe^{2+}

    C.

    Cu2+Cu^{2+}

    D.

    Zn2+Zn^{2+}

  2. 2.

    Which of the following 5d5d elements has an atomic radius very similar to Rhenium (ReRe)?

    A.

    Manganese (MnMn)

    B.

    Technetium (TcTc)

    C.

    Cobalt (CoCo)

    D.

    Iridium (IrIr)

  3. 3.

    What is the trend in atomic radius from ScSc to YY to LaLa?

    A.

    Decrease

    B.

    Increase

    C.

    First increase then decrease

    D.

    First decrease then increase

Download the worksheet for d and f Block Elements - Variation in atomic and ionic radii to practice offline. It includes additional chapter-level practice questions.

Oxidation states and Ionization enthalpy

Subtopic

Oxidation states and Ionization enthalpy under d and f Block Elements for Grade 12 ICSE.

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Preview questions (no answers)

  1. 1.

    Which oxidation state of Manganese is the most stable in acidic aqueous solution?

    A.

    +7

    B.

    +4

    C.

    +2

    D.

    +3

  2. 2.

    Among the 3d3d series, which element's IE2IE_2 is unexpectedly low because it leads to a d10d^{10} configuration?

    A.

    Copper

    B.

    Zinc

    C.

    Chromium

    D.

    Manganese

  3. 3.

    What is the common oxidation state of Silver (AgAg) in its compounds?

    A.

    +1

    B.

    +2

    C.

    +3

    D.

    0

Download the worksheet for d and f Block Elements - Oxidation states and Ionization enthalpy to practice offline. It includes additional chapter-level practice questions.

Catalytic properties and Magnetic properties

Subtopic

Catalytic properties and Magnetic properties under d and f Block Elements for Grade 12 ICSE.

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Preview questions (no answers)

  1. 1.

    What is the magnetic moment of Zn2+Zn^{2+} ion (Z=30Z=30)?

    A.

    0 BM0 \text{ BM}

    B.

    1.73 BM1.73 \text{ BM}

    C.

    2.83 BM2.83 \text{ BM}

    D.

    5.92 BM5.92 \text{ BM}

  2. 2.

    In the lead chamber process, which of the following acts as a catalyst?

    A.

    Oxides of nitrogen

    B.

    Platinum powder

    C.

    Vanadium oxide

    D.

    Nickel

  3. 3.

    Which of the following is paramagnetic?

    A.

    ZnZn

    B.

    Hg2+Hg^{2+}

    C.

    Cu2+Cu^{2+}

    D.

    Ag+Ag^+

Download the worksheet for d and f Block Elements - Catalytic properties and Magnetic properties to practice offline. It includes additional chapter-level practice questions.

Preparation and properties of K2Cr2O7 and KMnO4

Subtopic

Preparation and properties of K2Cr2O7 and KMnO4 under d and f Block Elements for Grade 12 ICSE.

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Preview questions (no answers)

  1. 1.

    Which compound is formed when CrO2Cl2CrO_{2}Cl_{2} is dissolved in NaOHNaOH solution?

    A.

    Na2CrO4Na_{2}CrO_{4}

    B.

    CrCl3CrCl_{3}

    C.

    Na2Cr2O7Na_{2}Cr_{2}O_{7}

    D.

    Cr(OH)3Cr(OH)_{3}

  2. 2.

    What is the equivalent mass of KMnO4KMnO_{4} when it is reduced to K2MnO4K_{2}MnO_{4} in a strongly basic medium?

    A.

    Molecular mass / 1

    B.

    Molecular mass / 3

    C.

    Molecular mass / 5

    D.

    Molecular mass / 2

  3. 3.

    Which of the following is used to remove the yellow color of iron(III) during the preparation of K2Cr2O7K_{2}Cr_{2}O_{7} from chromite?

    A.

    Filtering out insoluble Fe2O3Fe_{2}O_{3}

    B.

    Adding more acid

    C.

    Adding KClKCl

    D.

    Heating the solution

Download the worksheet for d and f Block Elements - Preparation and properties of K2Cr2O7 and KMnO4 to practice offline. It includes additional chapter-level practice questions.

Lanthanoids and Actinoids

Subtopic

Lanthanoids and Actinoids under d and f Block Elements for Grade 12 ICSE.

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Preview questions (no answers)

  1. 1.

    The solubility of lanthanoid hydroxides in water is generally:

    A.

    High

    B.

    Low

    C.

    Infinite

    D.

    Same as alkali hydroxides

  2. 2.

    Which of the following lanthanoids has the smallest ionic radius in the +3 state?

    A.

    La3+La^{3+}

    B.

    Gd3+Gd^{3+}

    C.

    Er3+Er^{3+}

    D.

    Lu3+Lu^{3+}

  3. 3.

    Actinoids are called inner transition elements because they involve the filling of:

    A.

    Outer s-orbital

    B.

    Penultimate d-orbital

    C.

    Anti-penultimate f-orbital

    D.

    Outer p-orbital

Download the worksheet for d and f Block Elements - Lanthanoids and Actinoids to practice offline. It includes additional chapter-level practice questions.

Lanthanoid contraction

Subtopic

Lanthanoid contraction under d and f Block Elements for Grade 12 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which element is the first member of the lanthanide series?

    A.

    Lanthanum (LaLa)

    B.

    Cerium (CeCe)

    C.

    Actinium (AcAc)

    D.

    Thorium (ThTh)

  2. 2.

    The melting points of lanthanides generally increase across the series. This is primarily because of:

    A.

    Decreased nuclear charge

    B.

    Increased atomic size

    C.

    Increased interatomic forces due to contraction

    D.

    Decreased density

  3. 3.

    Which oxidation state is shown by Europium (EuEu) due to the stability of a half-filled ff subshell?

    A.

    +1+1

    B.

    +2+2

    C.

    +4+4

    D.

    +5+5

Download the worksheet for d and f Block Elements - Lanthanoid contraction to practice offline. It includes additional chapter-level practice questions.

d and f Block Elements - Class 12 Chemistry (ICSE) | Krit.club