May 3, 2026Learn about variable valency with the example of iron, which exhibits valencies of +2 and +3 in common compounds like FeO and Fe2O3.

May 1, 2026Learn why sulphur exhibits different valencies due to its ability to form multiple oxidation states using vacant d-orbitals.

Apr 12, 2026Discover why sulphur has variable valency due to its vacant d-orbitals and its ability to form compounds with valencies of -2, +2, +4, and +6.

Mar 31, 2026Learn how sulfur shows variable valency by promoting electrons to 3d orbitals, resulting in oxidation states +2, +4, and +6.

Mar 28, 2026Discover how sulfur exhibits variable valency states (+2, +4, +6) and its importance in chemical compounds and industrial processes.

Mar 19, 2026Explore why some elements display variable valency and the impact of oxidation states in chemical bonding.

Mar 15, 2026Explore the causes of variable valency in elements and its impact on chemical bonding.