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 ...

A very strong neutron emitter, Cf-252 is used in portable metal detectors, for identifying gold and silver ores ... added elements 104 to 106 to the periodic table. In 1964 the first superheavy ...

Copper has been used by humans for as much as 7000 years and elements such as gold, silver, tin ... line in the diagram of the periodic table above separates the metals, on the left, from non ...

Bismuth, the 83rd element in the periodic table, has been known since ancient ... alleged method to transform bismuth and aluminium into silver. This led to a surge in the price of bismuth on ...