Edzy
AI TutorResourcesToolsCompareBuy
SearchDownload AppLogin
Edzy

Edzy for Classes 6-12

Edzy is a personal AI tutor for CBSE and State Board students, with curriculum-aligned guidance, practice, revision, and study plans that adapt to each learner.

  • Email: always@edzy.ai
  • Phone: +91 96256 68472
  • WhatsApp: +91 96256 68472
  • Address: Sector 63, Gurgaon, Haryana

Follow Edzy

Browse by Class

  • CBSE Class 6
  • CBSE Class 7
  • CBSE Class 8
  • CBSE Class 9
  • CBSE Class 10
  • CBSE Class 11
  • CBSE Class 12
Explore the CBSE resource hub

Explore Edzy

  • Study Resources
  • Free Study Tools
  • Best Apps for Board Exams
  • Edzy vs ChatGPT
  • About Us
  • Why We Built Edzy
  • Blog
  • CBSE AI Tutor

Support & Legal

  • Help & FAQs
  • Accessibility
  • Privacy Policy
  • Terms & Conditions
  • Refund Policy
  • Cookie Policy
  • Site Directory

© 2026 Edzy. All rights reserved.

Curriculum-aligned learning paths for students in Classes 6-12.

Chapter Hub

The d-and f-Block Elements

This chapter explores the d- and f-block elements of the periodic table, focusing on their properties, electronic configurations, and applications. It highlights the unique characteristics of transition and inner transition metals.

Summary, practice, and revision
CBSE
Class 12
Chemistry
Chemistry - I

The d-and f-Block Elements

Chapter Summary

Playing 00:00 / 00:00

Download NCERT Chapter PDF for The d-and f-Block Elements – Latest Edition

Access Free NCERT PDFs & Study Material on Edzy – Official, Anytime, Anywhere

Live Challenge Mode

Ready to Duel?

Challenge friends on the same chapter, answer fast, and sharpen your concepts in a focused 1v1 battle.

NCERT-aligned questions
Perfect for friends and classmates

Why start now

Quick, competitive practice with instant momentum and zero setup.

More about chapter "The d-and f-Block Elements"

In this chapter, we delve into the fascinating world of the d- and f-block elements in the periodic table, commonly known as transition metals and inner transition metals, respectively. The d-block elements span groups 3-12, where d orbitals fill progressively, leading to a range of oxidation states and distinct properties such as high melting points, catalytic abilities, and colored ions. The f-block comprises lanthanoids and actinoids, showcasing similar yet more complex behaviors due to their variable oxidation states and radioactivity in actinoids. Key examples, including potassium dichromate and permanganate, are discussed along with their preparation, uses, and significance in modern chemistry. This chapter equips students with knowledge about the trends, characteristics, and practical applications of these essential elements in various industries.
Learn Better On The App
A clearer daily roadmap

Your Study Plan, Ready

Start every day with a clear learning path tailored to what matters next.

Daily plan
Less decision fatigue

Faster access to practice, revision, and daily study flow.

Edzy mobile app preview

The d-and f-Block Elements in Chemistry

Explore the properties, electronic configurations, and applications of d-and f-block elements in the periodic table. Learn about transition metals, lanthanoids, actinoids, and their significance in modern chemistry.

Transition metals are elements located in groups 3-12 of the periodic table characterized by having incomplete d orbitals. They exhibit properties such as variable oxidation states, formation of colored compounds, and metallic characteristics.
Zinc is not classified as a transition metal because it has a full d10 configuration in its neutral state, making it not have an incomplete d subshell, which is a defining characteristic of transition metals.
Lanthanoid contraction refers to the gradual decrease in atomic and ionic radii of lanthanide elements as atomic number increases. This occurs due to the insufficient shielding provided by the 4f electrons as the nuclear charge increases.
Transition metals typically display high tensile strength, ductility, high melting and boiling points, good conductivity, paramagnetic behavior due to unpaired d electrons, and form colored compounds and complex ions.
Manganese can exhibit a range of oxidation states from +2 to +7, with +2 and +7 being the most common. Its significant variability in oxidation state is due to the availability of its d electrons for bonding.
Potassium dichromate is prepared from chromite ore by fusion with sodium carbonate in the presence of air, followed by acidification. Potassium permanganate is made by oxidizing MnO2 with alkali and an oxidizing agent.
Transition metal ions display a variety of colors in solutions due to electronic transitions within d orbitals. For instance, copper(II) ions appear blue, while iron(III) ions can appear yellow or brown depending on their complexes.
Inner transition metals include lanthanoids and actinoids, found in the f-block of the periodic table. They have partially filled f orbitals and exhibit complex chemistry, often involving multiple oxidation states and radioactivity.
The d orbitals are crucial in determining the unique properties of transition metals, including their ability to form various oxidation states, colored complexes, and catalytic activity, as these properties arise from the electronic configuration of d electrons.
Transition metals possess high melting and boiling points due to strong metallic bonding, which involves the delocalization of d electrons resulting in strong interatomic attractions.
Interstitial compounds are formed when small atoms (like hydrogen or carbon) occupy the spaces (interstices) between the larger metal atoms in a crystal lattice. These compounds often exhibit unique physical properties and higher hardness.
Transition metals act as catalysts due to their ability to change oxidation states, form complex compounds, and provide active sites for chemical reactions, thereby increasing the reaction rates without being consumed.
The oxidation state significantly impacts a metal’s reactivity as it determines the types of compounds it can form. Higher oxidation states typically enhance oxidizing properties, while lower states may exhibit reducing characteristics.
The most common oxidation state for lanthanoids is +3, although +2 and +4 states can occur in certain cases. The stability of these oxidation states varies among different lanthanides.
Yes, transition metals can form complex ions by bonding with ligands, which can be neutral molecules or anions. The resulting complexes often have distinct properties and applications in coordination chemistry.
The stability of various oxidation states in transition metals is influenced by the electronic configuration, particularly the arrangement of d electrons, lattice energy, and the nature of coordinating ligands.
Copper does not liberate hydrogen from acids because it has a positive standard electrode potential, which means it is not energetically favorable for copper ions to be reduced by hydrogen ions in acidic solutions.
Actinoids differ from lanthanoids primarily due to their greater variability in oxidation states and their radioactive nature, making their chemistry more complex and less predictable.
Transition metals and their compounds are widely used in industrial applications, such as catalysts in chemical processes, manufacturing of alloys, pigments in paints, and components in electronic devices.
The ionic radii of transition metals generally decrease across a series due to increasing nuclear charge, which leads to greater attraction between the nucleus and the electrons, effectively pulling the electrons closer.
The oxidation states of transition metals are determined by the loss or gain of electrons, particularly from their d and s orbitals during chemical reactions, which varies based on their electronic configuration and the ligands involved.
F-block elements, comprising lanthanoids and actinoids, are unique due to their filling of f orbitals and their broader range of oxidation states, alongside complexities arising from their radioactive nature and varying stability.
Exchange energy in transition metals is significant as it stabilizes specific electron arrangements, influencing the ease of ionization and resulting in the unique chemical behaviors characteristic of these elements.

Chapters related to "The d-and f-Block Elements"

Solutions

This chapter focuses on the characteristics and behaviors of solutions, including their formation, composition, and properties.

Start chapter

Electrochemistry

This chapter discusses the principles of electrochemistry, covering the generation of electricity through chemical reactions and the application of electricity in chemical processes.

Start chapter

Chemical Kinetics

This chapter introduces chemical kinetics, focusing on the rates of chemical reactions and the factors influencing them.

Start chapter

Coordination Compounds

This chapter explores coordination compounds, which are essential in modern inorganic chemistry. Understanding these compounds enhances knowledge of chemical bonding and their applications in various fields.

Start chapter

The d-and f-Block Elements Summary, Important Questions & Solutions | All Subjects

Question Bank

Worksheet

Revision Guide

Formula Sheet