Introduction

Previous Year Papers for JEE Advanced – Chapter-wise, Chemistry STD 12 – d and f-Block Elements is an essential resource for students preparing for JEE Advanced. This chapter deals with the chemistry of transition (d-block) and inner transition (f-block) elements, their electronic configurations, oxidation states, magnetic properties, and important compounds.

Solving chapter-wise previous year papers helps students strengthen conceptual clarity, improve problem-solving efficiency, and gain confidence in handling both theoretical and numerical questions.

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Importance of Chapter-wise Previous Year Papers

Focusing on chapter-wise JEE Advanced papers for “d and f-Block Elements” enables students to:

• Understand the type and difficulty of transition and inner transition metal questions in JEE Advanced.

• Identify high-frequency topics like oxidation states, electronic configuration, coordination compounds, and properties of actinides and lanthanides.

• Improve accuracy in predicting properties, reactivity, and magnetic behavior.

• Build confidence in tackling advanced inorganic chemistry questions efficiently.

Chapter-wise preparation ensures students master d and f-block chemistry before moving to coordination compounds, organometallic chemistry, and analytical applications.

Topics Covered in d and f-Block Elements

This chapter includes several essential topics for JEE Advanced:

d-Block Elements (Transition Metals)

• General electronic configuration ((n−1)d1−10ns0−2(n-1)d^{1-10} ns^{0-2}(n−1)d1−10ns0−2)

• Variable oxidation states and stability of oxidation states

• Formation of colored ions and complex formation

• Magnetic properties: paramagnetism and diamagnetism

• Reactivity trends: reducing behavior, formation of oxides and halides

• Important compounds: [Fe(CN)6]3−,[Cu(NH3)4]2+,[Cr(H2O)6]3+[Fe(CN)_6]^{3-}, [Cu(NH_3)_4]^{2+}, [Cr(H_2O)_6]^{3+}[Fe(CN)6​]3−,[Cu(NH3​)4​]2+,[Cr(H2​O)6​]3+

Chapter-wise previous papers frequently include numerical and reasoning-based questions on oxidation states, electronic configuration, and stability of complexes.

f-Block Elements (Lanthanides and Actinides)

• General electronic configuration (4f1−146s24f^{1-14} 6s^24f1−146s2 for lanthanides, 5f1−147s25f^{1-14} 7s^25f1−147s2 for actinides)

• Lanthanide contraction and its effects on properties

• Oxidation states and common compounds

• Separation techniques: ion-exchange and fractional crystallization

• Actinides: properties, oxidation states, and important compounds

• Comparison of actinides and lanthanides with transition metals

Previous year papers often test trends in atomic and ionic radii, basicity of oxides, and separation of lanthanide elements.

Coordination Chemistry

• Formation of complexes with ligands

• Werner’s theory and modern coordination concepts

• Bonding in complexes: valence bond theory and crystal field theory

• Color, magnetic properties, and stability of coordination compounds

Chapter-wise papers include reasoning-based and numerical questions on coordination number, geometry, and CFSE (Crystal Field Stabilization Energy).

Trends and Properties of d and f-Block Elements

• Variation in atomic and ionic radii

• Ionization energy and electronegativity trends

• Redox behavior in aqueous and non-aqueous media

• Formation of interstitial compounds

Numerical and reasoning-based problems on trends and properties are a staple of JEE Advanced.

Numerical and Conceptual Problems

• Predicting oxidation states and electronic configuration

• Determining magnetic moments and spin-only values

• Problems involving CFSE and stability of complexes

• Separation of lanthanides and calculation-based questions on actinides

Practicing chapter-wise previous year papers ensures students develop speed, accuracy, and conceptual understanding of transition and inner transition metals.

Diagrams and Flowcharts

• Electronic configuration charts for d and f-block elements

• Trends in atomic and ionic radii, oxidation states

• Crystal field splitting diagrams for octahedral and tetrahedral complexes

• Stepwise flowcharts for lanthanide and actinide separation

Visual understanding is often tested in JEE Advanced, making diagram practice crucial for clarity.

Benefits of Solving Chapter-wise Previous Year Papers

Targeted Practice – Focus on one chapter to strengthen weak areas.

Pattern Recognition – Identify frequently asked questions and recurring calculation types.

Time Management – Practicing under timed conditions improves efficiency.

Confidence Building – Exposure to real exam questions reduces anxiety and strengthens problem-solving skills.

Tips for Practicing d and f-Block Elements

1. Master NCERT Theory – Understand electronic configurations, oxidation states, and coordination compounds thoroughly.

2. Focus on Trends and Properties – Be confident in predicting stability, color, and magnetic properties.

3. Solve Chapter-wise Previous Papers – Begin with this chapter before attempting full mock tests.

4. Maintain an Error Notebook – Track mistakes and revise difficult numerical or conceptual questions repeatedly.

5. Time-bound Practice – Solve numerical and conceptual problems under timed conditions to improve speed and accuracy.

6. Use Trusted Sources – Platforms like Studentbro.in provide updated chapter-wise previous papers with step-by-step solutions.

How Studentbro.in Helps Students Prepare

Studentbro.in provides a structured approach to chapter-wise JEE Advanced preparation:

• Organized Chapter-wise PDFs – Downloadable previous year papers for focused practice.

• Step-by-Step Solutions – Detailed explanations clarify concepts and improve problem-solving efficiency.

• Flexible Learning – Practice offline or online at your own pace.

• Regular Updates – New JEE Advanced papers are added annually to stay aligned with the latest exam pattern.

Conclusion

Mastering d and f-Block Elements is essential for building a strong foundation in JEE Advanced Chemistry. Chapter-wise previous year papers from Studentbro.in allow students to:

• Strengthen conceptual clarity

• Improve numerical and problem-solving skills

• Recognize frequently asked questions on transition and inner transition metals

• Build confidence for exam day

Consistent chapter-wise practice ensures students are fully prepared to tackle one of India’s toughest engineering exams. Structured preparation combined with conceptual understanding, trend analysis, and coordination chemistry makes cracking JEE Advanced achievable while reducing exam stress.