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Chapter 3 · Part 1

Classification of Elements and Periodicity

The periodic table — trends in size, ionisation energy & electronegativity.

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Concepts
0
Formulae
6 min
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Intermediate

Learning objectives

  • 1Explain development of the Periodic Table
  • 2Explain structure of the Modern Periodic Table
  • 3Explain atomic Radius and Ionic Radius
  • 4Explain ionisation Enthalpy
  • 5Explain electron Gain Enthalpy and Electronegativity
  • 6Describe the periodicity in Properties and Valence

Your learning path

Introduction
Development of the Periodic Table
Structure of the Modern Periodic Table
Atomic Radius and Ionic Radius
Ionisation Enthalpy
Electron Gain Enthalpy and Electronegativity
Periodicity in Properties and Valence
Summary
Quiz
Revision
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Key terms

decreasesincreasesatomic numberAtomic radiusElectronegativityIonisation enthalpyElectron gain enthalpygroupbasicgroupsperiodanionsacidicperiodss-blockp-block

Connected chapters

Chemical Bonding and Molecular Structureshares: anions
6Concepts
0Formulae
6Minutes
PreviousStructure of AtomNextChemical Bonding and Molecular Structure