Notes (grouped by topic)
Early atomic theory - group 1 group 2 group 3
Dalton (billiard ball model) - group 1 group 2 group 3
Thomson (plum pudding) - group 1 group 2
rutherford (nuclear model) - group 1 group 2 group 3
Bohr (energy levels) - group 1 group 2 group 3
Quantum - group 1 group 2 group 3
Mendeleev (periodic table)
Radioactivity - group 1 group 2 group 3
Dalton (billiard ball model) - group 1 group 2 group 3
Thomson (plum pudding) - group 1 group 2
rutherford (nuclear model) - group 1 group 2 group 3
Bohr (energy levels) - group 1 group 2 group 3
Quantum - group 1 group 2 group 3
Mendeleev (periodic table)
Radioactivity - group 1 group 2 group 3