2026 අ.පො.ස උසස් පෙළ | රසායන විද්යාව | සිංහල මාධ්ය
Module 9 - Electron gain energy and electronegativity
Module 8 - Ionization energy
Module 7 - Periodic Trends in Atomic and Ionic Radius
Module 6 - Building of Periodic Table and Screening effect
Module 5 - Electron Configuration
Module 4 - Orbitals and Quantum Numbers
Module 3 - Hydrogen emission Spectrum
Module 2 - Electromagnetic Radiation & Wave - like properties of matter
Module 1 - The atomic Theory of matter