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d- and f-Block Elements — Study Plan

ICSE · Class 12 · Chemistry

A step-by-step study plan for d- and f-Block Elements, ICSE Class 12 Chemistry: what to learn first, what to practise and when to revise.

60 questions45 flashcards5 concepts

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An infographic showing the trend in the nature of oxides (basic, amphoteric, acidic, neutral) across a period in the periodic table, with examples.
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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas and key ideas. Focus on: 1. Position, Definition, and Classification, 2. Electronic Configuration and Exceptional Cases, 3. Atomic Size, Ionic Size, Density, and Metallic Nature.

2
Day 3

Practise

Solve the textbook exercises and extra practice questions. There are 60 questions available for this chapter.

3
Day 4

Revise & Test

Revise key points without looking at your notes. Take a practice quiz and mark weak areas for another pass.

4
Day 7

Spaced Revision

Come back to d- and f-Block Elements after a week. Use flashcards for quick recall and try past exam questions on this chapter.

What to Focus On

  • Transition elements belong to groups 3 to 12.
  • The differentiating electron enters the (n-1)d subshell in transition elements.
  • Inner transition elements have differentiating electrons in the (n-2)f subshell.
  • Transition elements commonly have (n-1)d1-10 ns1-2 configurations.
  • Chromium has [Ar]3d5 4s1 due to extra stability of half-filled subshells.
  • Copper has [Ar]3d10 4s1 due to extra stability of completely filled subshells.
  • Atomic radii decrease across a transition series and become nearly constant after midway.
  • Atomic radii increase slightly near the end of a series.
  • Atomic radii increase down a group.

Common Mistakes to Avoid

All d-block elements are true transition elements.

Copper is not a transition element because its atom has a filled d-subshell.

Cr and Cu follow the normal aufbau order exactly.

Memory Tips

Definition of transition elements

Definition of inner transition elements

First, second, third, and fourth transition series

Exceptional configuration of chromium

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Frequently Asked Questions

What are the important topics in d- and f-Block Elements for ICSE Class 12 Chemistry?
Key topics in d- and f-Block Elements include Position, Definition, and Classification, Electronic Configuration and Exceptional Cases, Atomic Size, Ionic Size, Density, and Metallic Nature, Ionisation Enthalpy, Oxidation States, and Electrode Potentials. Study these first, then practise questions on each for the ICSE Class 12 board exam.
How should I revise d- and f-Block Elements for the ICSE Class 12 board exam?
Learn the core ideas first, then work through the 60 practice questions on d- and f-Block Elements. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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