The heaviest metal on the periodic table of elements is osmium. Its density is 22.57 grams per cubic centimeter, which is twice that of the element lead. A quarter-gallon of osmium weighs 50 pounds when compared to a quarter-gallon of water, which weighs only 2.2 pounds.
Osmium is so dense that a 2-cubic-foot block of the metal weighs as much as an automobile that weighs 3,400 pounds. Metallic osmium is very difficult to make, and it is hard, brittle and mainly used to manufacture tough alloys. As of 2014, osmium is retrieved during the processing of nickel and platinum ores.Learn More
On the periodic table, the seven horizontal rows are called periods. On the left-hand side of the periodic table, the row numbers are given as one through seven. Moving across a period from left to right, the atomic number of the elements increases.Full Answer >
Co in the periodic table of elements is cobalt. Located in group nine, period four of the periodic table, this transition metal has an atomic number of 27 and an atomic weight of 58.9. It is a hard element that appears bluish-gray in color.Full Answer >
Mendeleev arranged the periodic table in order of increasing atomic weight of the elements. He determined that there was a pattern when he arranged these elements into horizontal rows.Full Answer >
The symbol "Cd" stands for the element cadmium on the periodic table. The atomic number of cadmium is 48, and its atomic weight is 112.404 atomic mass units. Cadmium is a heavy metal that belongs to the fifth period on the periodic table.Full Answer >