The d- and f-Block Elements
Class 12 Chemistry: d- and f-block elements — trends, oxidation states, colour, magnetism, K2Cr2O7, KMnO4, lanthanoid contraction, with solved examples and tests.
Study by topic — one focused page each
Transition Elements: Trends
The d-block elements occupy Groups 3 to 12 of the periodic table, sitting between the s-block and the p-block. They are called transition elements bec…
Start this topic → 2Properties of Transition Metals
The partially filled d orbitals of transition metals give rise to a cluster of characteristic properties: colour, paramagnetism, catalytic activity, c…
Start this topic → 3f-Block: Lanthanoids & Actinoids
The f-block elements are the two rows placed below the main body of the periodic table. The lanthanoids (Ce Lu, following lanthanum) involve the filli…
Start this topic →Chapter-wide tests
Online Test
20 MCQ • 15 min
IMO / Olympiad Practice
Olympiad level • 15 min
📝 Full Chapter Test (Download & Print)
40 marks • 90 min • with answer key