The Transition Elements and Coordination Chemistry – Basics section introduces the fundamental principles governing transition metals and coordination compounds, which form the backbone of modern inorganic chemistry, industrial catalysis, and bioinorganic systems. This module is designed for Class 11–12 students, undergraduate learners, and competitive exam aspirants, with emphasis on conceptual clarity, definitions, and structural understanding.

In this section, you will study:

• Definition and general characteristics of transition elements

• Electronic configuration of d-block elements and their periodic trends

• Common oxidation states and variable valency of transition metals

• Formation and nature of coordination compounds

• Ligands and coordination number – basic classification and examples

• Nomenclature of coordination compounds (IUPAC basics)

• Bonding concepts (introductory) – Werner’s theory and basic ideas of metal–ligand bonding

• Magnetic properties (introductory) – paramagnetism and diamagnetism

• Color of transition metal ions – basic explanation using d–d transitions

• Simple coordination geometries – octahedral, tetrahedral, and square planar

• NCERT-aligned explanations, supported by diagrams, tables, examples, and basic MCQs

The content is structured to build a strong conceptual base, enabling students to understand advanced d-block chemistry, coordination theory, and applications covered in later chapters.

Master these basic concepts of Transition Elements and Coordination Chemistry to lay a solid foundation for advanced inorganic chemistry, competitive exams, and real-world chemical applications.