Videos
Early Discovery of Elements
156
Dobereiner's Triads
141
Law of Octaves
135
Mendeleev's Periodic Table
253
Classification of Periodic Table
263
Electrons in Atoms
117
Explanation of Periodic Table
222
Introduction
131
Where It All Began
416
Where It All Began
214
Where It All Began
244
Why Periodic?
124
Modern Chemistry and Elements
406
Atomic Radius
227
Variation of Atomic Radius
285
Vander Waals Radius
94
Ionic Radius
341
Isoelectronic Species
194
Adaptive LAL1.0 hint
41
Moseley's Law
124
Blocks of Modern Periodic Table
101
Oxidation State
88
Ionization Energy
187
Successive Ionization Energies
86
Factors Affecting Ionization Energy
38
Penetration Effect
167
Screening Effect
142
Electron Gain Enthalpy
196
More on Electron Gain Enthalpy
220
Exceptions in the Variation of Electron Gain Enthalpy
248
Successive Electron Gain Enthalpies
113
Conclusion
63
Introduction to Electronegativity
58
Factors Affecting Electronegativity
72
Electropositive and Electronegative Nature
103
Metallic and Non-metallic Character
101