In NCERT Class 12 Chemistry Chapter 4, "The d- and f-Block Elements," students explore the unique properties and applications of transition and inner transition elements. This chapter delves into the structure, electronic configuration, and characteristic behavior of d-block and f-block elements, highlighting their roles in various compounds and industries.
This article provides valuable resources for CBSE and CUET exam preparation, including downloadable MCQs and a compilation of 10 years of Previous Year Questions (subjective) from NCERT/CBSE without solutions. These resources are designed to reinforce key concepts in NCERT Class 12 Chemistry Chapter 4.
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NCERT Class 12 Chemistry Chapters
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Chapter Number
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Chapter Name
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Chapter I
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Chapter II
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Chapter III
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Chapter V
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Chapter VI
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Chapter VII
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Chapter VIII
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Chapter IX
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Chapter X
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Explore the MCQs for Class 12 Chemistry Chapter on The d- and f-Block Elements. Each question offers four options, with only one correct answer. Students can select the correct option and verify their knowledge here.
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1. |
The ions of metals of Group 12 (Zn, Cd and Hg) have completely filled d orbitals and so they: (a) behave like semiconductors (b) are very high melting solids (c) do not behave like transition metals (d) behave like superconductors |
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Given below are two statements labelled as Assertion (A) and Reason (R). Assertion (A): Zinc is not regarded as a transition element. Reason (R): In zinc, 3d orbitals are completely filled in its ground state as well as in its oxidised state. (a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A). (b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A). (c) Assertion (A) is true, but Reason (R) is false. (d) Assertion (A) is false, but Reason (R) is true.
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Which of the following ions has the electronic configuration 3d6 ? (Atomic number: Mn = 25, Co = 27, Ni = 28) (a) Ni3+ (b) Co3+ (c) Mn2+ (d) Mn3+ |
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Total number of unpaired electrons present in Co3+ (Atomic number = 27) is (a) 2 (b) 7 (c) 3 (d) 5 |
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Given below are two statements labelled as Assertion (A) and Reason (R). Assertion (A): Copper is a non-transition element. Reason (R): Copper has completely filled d-orbitals in its ground state. (a) Both (A) and (R) are true and (R) is the correct explanation of (A). (b) Both (A) and (R) are true, but (R) is not the correct explanation of (A). (c) (A) is true, but (R) is false. (d) (A) is false, but (R) is true. |
Review the subjective questions for Class 12 Chemistry Chapter on The d- and f-Block Elements. These questions enable students to deepen their understanding of the unique characteristics and uses of transition metals.
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Following ions of 3d transition series are given : V3+, Cr2+, Cu+, Fe2+, (Atomic number : V = 23, Cr = 24, Cu = 29, Fe = 26) Identify the ion which is (a) unstable in aqueous solution. (b) a strong reducing agent in aqueous solution. (c) colourless in aqueous solution? Give suitable reason in each. (CBSE 2022, 3M) |
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Define transition elements. Write two characteristics of transition elements. (CBSE 2022, 3M) |
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(CBSE 2023, 5M) |
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Complete the following equations: (a) (b) (CBSE 2023, 2M) |
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How would you account for (a) The E° value for the Mn3+/Mn2+ couple is much more positive than that for Cr3+/Cr2+ couple or Fe3+/Fe2+ couple. (b) Complete the following equation: (CBSE 2023, 2M) |
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NCERT Science Subjects
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Chapter Name |
Sub Topics of Chapter 4: The d- and f-Block Elements |
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The d- and f-Block Elements |
4.1 Position in the Periodic Table |
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4.2 Electronic Configurations of the d-Block Elements |
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4.3 General Properties of the Transition Elements (d-Block) |
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4.4 Some Important Compounds of Transition Elements |
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4.5 The Lanthanoids |
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4.6 The Actinoids |
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4.7 Applications of d- and f-Block Elements |
NCERT Class 12 Chemistry Chapter 4, "The d- and f-Block Elements," explores the distinct chemical behaviors, electronic configurations, and periodic trends of transition metals and inner transition elements. This chapter provides a comprehensive view of the roles these elements play in compounds, as well as their applications in industries.
In NCERT Class 12 Chemistry Chapter 4, students also investigate the lanthanoids and actinoids, understanding their unique characteristics and real-world uses. This chapter is essential for students interested in material science, chemistry research, and applications of these metals in technology.