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 ...

IN his studies of the relative frequency of the different elements composing the crust ... dedving their names not from Cosmos, but from Kos- mann, who took out a patent for the preparation ...

The chemical formula of a ... about the formula of that compound. Names of these compounds have prefixes that give the number of atoms of certain elements in each molecule. Table showing prefixes ...

Elements that are in the same group of the periodic table have similar chemical properties (they react in the same way). Some groups have their own names.