Classification of Elements and Periodicity in Properties
Previous year questions with solutions · 2025 – 2026
28 Questions
27 Papers covered
4.21% ↑57.9% Weightage in 2026
Year-wise statistics questions · papers · average per paper · weightage Year Questions Papers Avg / paper Weightage 2026 20 19 1.1 4.21% ↑57.9% 2025 8 12 0.67 2.67%
All 28 MCQ 25 Matching 2 Numerical 1 TopicAll Atomic Radius and Ionic Radius Development of Periodic Table Electron Gain Enthalpy Electronegativity Ionisation Enthalpy Metallic and Non-Metallic Character Modern Periodic Table, Long Form of Periodic Table and IUPAC Names of Elements (Z > 100) Nature of Oxides Period, Group and Block YearAll 2026 2025
1
First and second ionization enthalpies of lithium are 520 kJ mol-1 and 7297 kJ mol-1 respectively. Energy required to convert 3.5 mg lithium (g) into Li2+(g) [ Li(g) Li2+(g)] is kJ. (nearest integer) [Molar mass of Li = 7 g mol-1]
JEE Main 2026 (Online) 6th April Morning Shift
