On the periodic table, metals are found on the left and in the middle, and non-metals are on the right. A zig-zag line divides them. In most periodic tables hydrogen (H) is shown separately but is ...

You may use table navigation commands for the screen reader of your choice. The Periodic Table of Elements. Each entry contains the atomic number, chemical symbol, and atomic mass to two decimal ...

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract ... with a large difference indicating a polar covalent bond (e.g., H-F bond ...

Want to learn more about this centerpiece of chemistry? Take your pick from this collection of links about elements and the periodic table! Build an element ball, solve periodic puzzles, and check out ...