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 ...

and all the elements in group 0 are unreactive non-metals. The zigzag, staircase, line in the diagram of the periodic table above separates the metals, on the left, from non-metals, on the right.

both of which are elements. All the atoms in a copper wire are the same. These are different to the atoms in aluminium foil which are all the same as each other. The periodic table can be divided ...

The periodic table of elements is a landmark categorization developed in 1869 by the Russian chemist and inventor Dmitri ...

Electronegativity, an essential characteristic of all elements in the periodic table ... element is cesium (0.79 on the Pauling scale and left in the second row from the bottom in the periodic table).