In discussing halogen reactivity (as covered in Core Idea), it is a common practice to argue that as you go down the Group 17 elements it becomes harder for the elements to gain an electron to form a ...

The periodic table arranges all the chemical elements in a specific way. Patterns are visible in the way that elements behave, and this allows us to make predictions about other elements.

The power of the periodic table lies not in the fact that it contains all known elements, but in that the particular ordering of the elements sheds light on their physical and chemical properties, ...

sulfur and oxygen share similarities in chemical reactivity. However, sulfur's position lower in the periodic table endows its compounds with distinct properties that are advantageous to ...

Recent research has focused on understanding the chemical behavior, electronic structure, and reactivity of these ... enhances our understanding of the periodic table but also pushes the ...