Videos

Adaptive LAL3.0 hint
17

Adaptive LAL1.0 hint
41

Adaptive LAL2.0 hint
27

Adaptive LAL5.0 hint
32

Adaptive LAL3.0 hint
10

Introduction
131

Why Periodic?
124

Early Discovery of Elements
156

Early Discovery of Elements
156

Dobereiner's Triads
141

Dobereiner's Triads
141

Law of Octaves
135

Law of Octaves
135

Mendeleev's Periodic Table
252

Mendeleev's Periodic Table
252

Classification of Periodic Table
263

Electrons in Atoms
117

Explanation of Periodic Table
222

Trends in the Modern Periodic Table
212

Where It All Began
416

Where It All Began
214

Where It All Began
244

Modern Chemistry and Elements
406

Initial Organization
274

Initial Organization
126

Initial Organization
217

Early Models of Periodic Table