Which periodic table uses different A and B designations and labels families differently compared to the North American Convention?

The European Convention Periodic Table distinguishes itself by utilizing different A and B designations for the groups, which is not aligned with the North American Convention that employs a simple numbering system. In the European approach, the A groups typically include the main group elements, while the B groups correspond to transition metals. Additionally, the way families (or groups) are labeled in the European Convention may differ in terminology and categorization compared to how they are represented in North American contexts. This unique classification helps in the identification and study of different elemental behaviors and trends across various groups. Understanding these differences is crucial for anyone studying periodic trends and properties in chemistry from various global perspectives.