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Periodic Classification of Elements and General Inorganic Chemistry — Syllabus

JEE Advanced · Chemistry

Free Periodic Classification of Elements and General Inorganic Chemistry syllabus for JEE Advanced Chemistry 2026 — topics covered, weightage, and preparation priorities for this chapter.

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A diagram of a portion of the periodic table highlighting the diagonal relationships between certain elements (e.g., Li-Mg, Be-Al, B-Si), showing their similar properties.
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Periodic Classification of Elements and General Inorganic Chemistry — Syllabus & Topics

Topics covered in Periodic Classification of Elements and General Inorganic Chemistry for JEE Advanced Chemistry.

Topics in Periodic Classification of Elements and General Inorganic Chemistry

1

Historical Development of Periodic Table

  • Dobereiner's Law of Triads (1817): Elements arranged in groups of three with similar properties, where atomic weight of middle element ≈ average of other two
  • Newlands' Law of Octaves (1865): Every eighth element showed similar properties (valid only up to calcium)
  • Mendeleev's Periodic Law (1869): Physical and chemical properties are periodic functions of atomic weights
2

Modern Periodic Table Structure and Electronic Configuration

  • 18 vertical groups and 7 horizontal periods based on electronic configuration
  • Period number = Principal quantum number (n) of valence shell
  • Group number determination: s-block = valence electrons, p-block = 10 + valence electrons, d-block = (n-1)d + ns electrons
3

Periodic Trends - Atomic and Ionic Radii

  • Atomic radius decreases across period (→) due to increasing nuclear charge
  • Atomic radius increases down group (↓) due to additional electron shells
  • Types of atomic radii: covalent (½ of bond length), metallic (½ of internuclear distance), van der Waals (½ of distance between non-bonded atoms)
4

Ionization Energy and Electron Gain Enthalpy

  • Ionization Energy (IE): Minimum energy to remove outermost electron from isolated gaseous atom
  • IE increases across period (→), decreases down group (↓)
  • Successive IE: IE₁ < IE₂ < IE₃... due to increased nuclear charge on remaining electrons

Key Concepts

The physical and chemical propertiesAtomic radius decreases across periods (→)Fajan's rules predict when ionic compoundsLattice energy is the energy releasedEnergy released when gaseous ions dissolve

Frequently Asked Questions

What topics are covered in Periodic Classification of Elements and General Inorganic Chemistry for JEE Advanced?
Periodic Classification of Elements and General Inorganic Chemistry is an important chapter in JEE Advanced Chemistry. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Historical Development of Periodic Table, Modern Periodic Table Structure and Electronic Configuration, Periodic Trends - Atomic and Ionic Radii, Ionization Energy and Electron Gain Enthalpy.
How important is Periodic Classification of Elements and General Inorganic Chemistry for JEE Advanced?
Periodic Classification of Elements and General Inorganic Chemistry is a frequently tested chapter in JEE Advanced Chemistry. Questions from this chapter appear regularly in previous year papers. There are 70 practice questions available for this chapter.
How to prepare Periodic Classification of Elements and General Inorganic Chemistry for JEE Advanced?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.

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