Videos
Genesis of Periodic Classification
2590
Modern Periodic Table
2254
Modern Periodic Table - Characteristics
2520
Shielding or Screening Effect
874
Periodic Trend - Atomic Radius
2361
Periodic Trend - Ionic Radius
2373
Periodic Trend - Ionisation Enthalpy
4057
Periodic Trend - Electron Gain Enthalpy
1123
Periodic Trend - Electron Affinity
1790
Periodic Trend - Electronegativity
5132
Periodic Trends in Chemical Properties
2240
NEET Analysis
133
JEE Main Analysis
136
Question - 1
70
Question - 2
40
JEE Mains -1 Question -1
75
JEE Mains -1 Question -2
57
JEE Mains -2 Question -1
148
JEE Mains -2 Question -2
202
JEE Mains -3 Question -1
81
Question - 3
58
Question - 4
37
JEE Advanced -1 Question -1
96
Question - 5
79
JEE Advanced -1 Question -2
67
JEE Advanced -2 Question -1
123
JEE Advanced -2 Question -2
92
JEE Advanced -3 Question -1
74
Atomic Radius
126
More challenges to solve
45
JEE Advanced -1 JEE Advanced Analysis
120
Metallic & Non-Metallic Character-1
44
Electronegativity Trend
52
Ionization Enthalpy
83
Metallic & Non-Metallic Character-2
23
JEE Advanced -3 Question -2
99
Element
291
Lavoiser's Classification
318
Dalton's Theory
125
Relative Atomic Mass
83
Chemical Reactivity
73
Dobereiner's Triads
226
Newlands' Octaves
345
Mendeleev's Periodic Law
52
The Missing Elements
357
Limitations of Mendeleev's Theory
127
Moseley's Contribution
273
Modern Periodic Table
172
Classification of the long form of periodic table
199
Periods
137
Groups
106
Metals, metalloids and non-metals
97
Blocks
61
s-block elements
31
p-block elements
73
Representative Elements
33
d-block elements
79
Transition Elements
52
f-block elements
96
Inner-transition elements
10
Lanthanides
19
Actinides
34
Transuranic Elements
47
IUPAC
207
Criteria for Naming Elements
648
IUPAC Nomenclature for elements with Z > 100
581
Position of an element in periodic table
1181
Interactions between the subatomic particles
84
Shielding/Screening Effect
105
Nuclear charge
52
Effective Nuclear Charge
71
Penetration power of Orbitals
254
Effective Nuclear Charge variation across the period
107
Effective Nuclear Charge variation along the group
112
Atomic Radius
188
Measuring Atomic Radius
83
Covalent Radius
77
Van der Waals Radius
157
Metallic Radius
53
Comparison of different types of radii
42
Factors affecting atomic radius
69
Atomic radius variation down the group
228
Atomic radii trend in d-block
375
Atomic radius variation across the period
252
Lanthanide Contraction
144
Ionic radius
438
Ionic Radius trends across the periodic table
80
Atomic Radius
126
Isoelectronic Species
282
Ionization
103
Ionization Enthalpy
248
Successive Ionization Enthalpies
376
Metallic & Non-Metallic Character-1
44
Ionization enthalpy trends across the periodic table
545
Electronegativity Trend
52
Ionization Enthalpy
83
IE trends in groups 13 and 14
272
IE trends across d-block
281
Metallic & Non-Metallic Character-2
23
Electron Affinity
308
Relation Between IE and EA
94
EA trends across the periodic table
85
Electronegativity
359
Electronegativity trends across periodic table
269
Scales of measuring electronegativity
213
Pauling Scale
730
Mulliken Scale
209
Allred-Rochow Scale
148
Applications of electronegativity
2301
Percentage ionic character through EN
349
Predicting acidic/nature of compounds using EN
865
Acidic/basic/amphoteric/neutral nature of oxides
695
Predicting bond strength and bond length of covalent compounds
108
Electronegativity vs Electron Gain Enthalpy
100
Valency
121
Nature's Deck
386
Elementary Classification
377
The Next Step
170
Trio of Elements
341
Newland's Law of Octaves
322
Mendeleev To The Rescue
251
Mendeleev's Periodic Law
173
The Limitations
143
The Cool Factor!
176
Moseley's Modification
197
Modern Periodic Table
389
Inside Look
119
Another Way of Sorting Elements
327
Blocks, Blocks Everywhere!
495
Whats In A Name?
253
But How?
420
The Cold War!
212
Naming Elements with Z>100
517
Naming Elements with Z>100
64
Lets Play Detective
583
Rules make our life easier
182
Practice 1
44
Practice 2
97
Practice 3
65
Practice 4
105
Practice 5
99
Practice 6
166
Practice 7
80
Practice 8
81
Practice 9
156
Practice 10
123
Practice 11
106
Shielding nuclear charge
311
It's not the same for all
216
Effective Nuclear Charge
331
Radius of an Atom
252
Types of Atomic radii
460
Radius depends on
367
Variation Across a Period
297
Practice 1
61
Practice 2
120
A closer look: Periodic Table
202
Let's get inside d-block
267
Abnormal Contraction !!
280
Ions: What are they?
275
Radii : Ionic vs Atomic
222
Lose or Gain electrons.But why?
217
Trend across the Table
246
Practice 1
122
Practice 2
197
Practice 3
146
Practice 4
188
Practice 5
220
Practice 6
503
Let's ionise!
243
Ionisation Energy
155
More energy more ionization
362
Trend Across the Period
443
Trend along the group
135
Anamolies: 13th and 14th Group
287
Anamolies: d-block elements
282
Practice 1
288
Practice 2
327
Predicting Valence Electrons
505
Finding The Group
132
Metallic character
160
Practice 3
230
Practice 4
75
Practice 5
128
Practice 6
93
Practice 7
75
Practice 8
96
Electron Gain Enthalpy
313
Gaining Electrons Across Table
215
Anomalies
586
Electron Affinity
458
Practice 1
190
Practice 2
62
Practice 3
225
Practice 4
247
Practice 5
274
Practice 6
163
Practice 7
142
Electronegativity
260
Electronegativity : A Qualitative Tool
95
Trends of Electronegativity
305
Measuring Electronegativity
1285
Practice 1
291
Applications of EN - 1
355
Applications of EN - 2
863
Applications of EN - 3
694
Applications of EN - 4
279
Applications of EN - 5
90
Practice 1
164
Practice 2
146
Practice 3
85
Practice 4
160
The Intro!
528
What is Valency?
281
Periodic Trends in Valency
282
Periodic Trends & Chemical Reactivity
303
Let's Practice!
66
A Tricky One!
45
Introduction
337
Diagonal Relationship
365
Group of an element using Ionization Enthalpy
626
Ionization enthalpy and metallic character
154
Electron Gain Enthalpy
290
Successive Electron gain enthalpies
241
EGE trend across the Period
223
EGE trend along the Group
332
Oxidation State
395
Valency/oxidation state - Periodic trends
564
Chemical reactivity - periodic trends
297
Anomalous Behaviour in periodic table
317
Diagonal Relationship
355
Group of an element using Ionization Enthalpy
626
Ionization enthalpy and metallic character
154
Group of an element using Ionization Enthalpy
626
Modern Periodic Table
173