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 ...

They can have different labels on the groups or numbers in the rectangles. However, the elements never move places. The periodic table's layout means we can make predictions about elements based ...

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