There are currently 118 known elements on the periodic table, and we've put 20 of them below to create a brain game that ...

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 ...

For example, oxygen is O.Others aren’t as straightforward. For example, the element symbol for iron is Fe, from the latin word ferrum for iron. On the periodic table, metals are found on the ...

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 ...

You may use table navigation commands for the screen reader of your choice. The Periodic Table of Elements. Each entry contains the atomic number, chemical symbol, and atomic mass to two decimal ...

On the periodic table, which contains 118 elements, there are only seven diatomic ... Nitrogen and oxygen, in their diatomic forms N 2 and O 2, make up 99 percent of the atmosphere on Earth.