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 ...

Mendeleev discovered the periodic table (or Periodic System ... by putting them in order of increasing atomic weight, certain types of element regularly occurred. For example, a reactive non-metal was ...

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 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 ...

In a compound, elements are chemically bonded together, which makes it very difficult to separate them. Compounds are not found on the periodic table. For example, water isn’t on the periodic ...

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

And what could possibly be more earthy than the elements of the periodic table, which literally come ... from selenium and Rhode from rhodium, for example. Read on for a full list of boy, girl ...

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract electrons towards itself within a chemical bond. This vital theoretical ...