You're listening to Chemistry in its element brought to you by Chemistry World, the magazine of the Royal Society of Chemistry. For the human brain, iron is essential yet deadly. It exists on Earth ...

The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

The periodic table is a well-organized chart that contains all the known elements in the universe. These elements are ...

For example, the element symbol for iron is Fe, from the latin word ferrum for iron. On the periodic table, metals are found on the left and in the middle, and non-metals are on the right.

Iron is the main ingredient in various forms of iron and steel, but the various types of metals contain other elements as well. Sometimes these elements are unwanted; other times they're ...

But how many of these elements do you know? Test your knowledge and compete with other Live Science readers to see who can ...