NECTA Form 1–4 (CSEE) · Form 2 · Chemistry (Form 2) · Notes · Unit 2: Atomic Structure, Subatomic Particles, Electron Configurations & Isotopes

Unit 2: Atomic Structure, Subatomic Particles, Electron Configurations & Isotopes

Official NECTA CSEE Form 2 Chemistry Topic 2.2: Evolution of atomic theory (Dalton, Thomson plum-pudding, Rutherford gold foil alpha scattering, Bohr quantized model), subatomic particles (protons, neutrons, electrons), atomic number (Z), mass number (A), standard nuclide notation, electron shell filling rules (2n^2, Aufbau, octet rule), configurations for elements 1-20 (H to Ca), deducing Periodic Table period and group, isotopy (hydrogen, carbon, chlorine), calculating Relative Atomic Mass (A_r), and radioisotope applications.