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 ...

Copper has been used by humans for as much as 7000 years and elements such as gold, silver, tin, lead and mercury have been known for many thousands of years. However, the first scientific ...

When it comes to science, chemistry is elemental. That pun is based on the fact that the main building blocks in the branch ...

These elements are building blocks of matter and everything around us is made up of them. There are 118 elements in the periodic table, each with a unique symbol and atomic number.

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 ...