Last week, we explored the evolution of the periodic table, with all its elements in order. Now that we’re well-organized, let’s dive into the reasoning. * The table is generally sorted by the number ...

A vertical column on the periodic table is called a group or sometimes a family. Elements within the same group share similar chemical properties because they have the same number of valence electrons ...

Based on its electron configuration (1s² 2s² 2p⁵), fluorine has seven valence electrons. This count is derived from adding ...