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 ...

Elements in group 1 and group 2 are metals ... See the study guide on groups in the periodic table for more information.

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

The periodic table - AQA Mendeleev made an early periodic table. In the modern periodic table, elements are in order of atomic number in periods and groups. Electronic structures model how ...

Do you remember how many elements there are in the periodic table? Spoiler: it’s probably different than you remember if you went to school before 2010. The periodic table has 118 elements in ...

The periodic table of elements (often known simply as the periodic table) has been helping scientists with their work for a little over 150 years. The handy visual reference guide organizes known ...

February 7 is National Periodic Table Day, when we celebrate the efforts of scientists over the centuries to figure out how different elements ...

National Periodic Table Day, observed annually on February 7, honors one of the most significant achievements in scientific ...

For every high school student who has thought that chemistry was over their head, Kristin Straumann has an answer. It is. At least it is for students in Strau-mann’s classroom at ...