On the periodic table, argon belongs to group 18, which is the noble gas group or family. Argon is an inert gas that has the atomic number of 18 and a melting point of -308.83 degrees Fahrenheit. Its chemical symbol is Ar.Know More
Sir William Ramsay and Lord Rayleigh were the two chemists who discovered this element in 1894. Argon, which is a colorless and odorless gas, is present in small amounts in the atmosphere. Through the process of fractional distillation, Ramsay and Rayleigh isolated argon from liquid air.
Because argon is inert, it's used as an inert gas shield for welding, as well as in incandescent light bulbs, lasers and glow tubes. Argon lasers and argon-dye lasers are important in the medical field for use in eye surgeries and for the treatment of certain skin conditions.Learn more in Atoms & Molecules
The element gallium belongs to the Boron family (group 13) on the periodic table. Gallium is a solid post-transition metal element. Its symbol is Ga, and its atomic number is 31.Full Answer >
Platinum belongs to the transition metals family, which includes the 38 elements found in groups 3 through 12 on the periodic table. The metals in the family are ductile and malleable while conducting electricity and heat.Full Answer >
Although hydrogen is normally listed at the top of Group I, the alkaline metals, on the periodic table, there is much debate as to which group it should belong. Many chemists believe hydrogen doesn't belong in any group and that Group I begins with lithium.Full Answer >
On the periodic table, silver belongs to the family of elements in group 11, as well as transitional metals. Some other elements in these families are copper and gold, and together these metals are sometimes referred to as the "coinage" metals.Full Answer >