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 table shows the melting points of five alkali metals. Use this information to describe how melting point changes in group 1.

but these elements cannot be seen in this version of the periodic table. Scientists Marie and Pierre Curie discovered two elements: radium and polonium. For these discoveries, Marie Curie received ...

That’s why this periodic table clock really caught our eye. [gocivici]’s idea is a simple one: light up three different elements with three different colors for hours, minutes, and seconds ...

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 ...

Scientists have found that our bodies need 28 different elements to function properly. These are almost one-quarter of the periodic table and are mainly found in the first four periods.

However, he is remembered for his search for a pattern in inorganic chemistry. Just four years before Mendeleev announced his periodic table, Newlands noticed that there were similarities between ...

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 ...

Nihonium (Nh), a radioactive synthetic element, joined the periodic table of elements in November five years ago with the atomic number 113. More than a century ago, a similar sounding but ...