Four new elements were added to the periodic table in 2015. These elements go through a long process to confirm their existence and to name them. ... Sometimes they can be in liquid or gas form.

The Disappearing Spoon: And Other True Tales of Madness, Love, and the History of the World From the Periodic Table of Elements. By Sam Kean. Little, Brown and Company; 2010.

Each element is not only given unique iconography in the periodic table, but each is given its own page with all of the above and other details such as symbol, melting point, boiling point ...

The most common element in the universe is hydrogen, which is also the lightest element on the periodic table. There are only two liquid elements on the periodic table at room temperature: mercury ...

Elements in the periodic table are arranged in order of increasing atomic number. The atomic number represents the number of protons in an atom's nucleus, uniquely identifying each element.

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 ...