The Periodic Table and Periodicity – Numerical Applications section focuses on quantitative and semi-quantitative problems that require numerical reasoning combined with periodic trends. This module is designed for Class 11–12 students, undergraduate learners, and competitive exam aspirants, where accuracy, approximation skills, and conceptual clarity are essential.

In this section, you will practice numericals involving:

• Effective nuclear charge (Zₑff) calculations using Slater’s rules

• Atomic and ionic radius estimations and percentage change calculations

• Ionization enthalpy–based numericals, including successive ionization energy patterns

• Electron gain enthalpy comparisons using numerical trend data

• Electronegativity calculations (Pauling scale approximations)

• Percentage ionic character based on electronegativity difference

• Charge density and polarizing power calculations

• Isoelectronic series numericals with size and stability comparisons

• Graph-based numericals involving periodic trends

• Exam-pattern numericals aligned with NEET, JEE, CUET-UG, and UG assessments

The content is structured to enhance calculation speed, improve numerical confidence, and help students translate abstract periodic trends into measurable quantities.

Build strong numerical reasoning skills in Periodic Table and Periodicity to confidently tackle calculation-based and data-driven questions in Inorganic Chemistry.