Oct 11, 2026Learn how many electrons the D block of the periodic table can hold and explore the role of transition metals in chemistry and industry.

Oct 5, 2026Learn how the 18-electron rule predicts the stability of transition metal complexes in inorganic and organometallic chemistry.

Oct 2, 2026Learn about the rhodium 18-electron rule, a key concept explaining the stability of rhodium complexes in coordination chemistry.

Sep 28, 2026Discover how 5d orbitals exist from the fifth energy level and influence electron configurations in transition metals.

May 31, 2026Learn about the penultimate shell rule that limits the second-to-last electron shell to 18 electrons and its role in atomic structure.

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.

Mar 28, 2026Learn how variable valency occurs in elements like iron and copper, enabling them to form ions with different charges and diverse compounds.

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.

Feb 28, 2026Learn about the 10 electron rule and its significance in organometallic chemistry for stable transition metal complexes.