Cobalt is also used to make magnetic alloys. Superalloys are used in gas turbines because is it is used to make electricity, which operates at a really high temperature. Superalloys are used where metals are placed under a great deal of stress and high temperatures.Super alloys are commonly used in airplane parts such as jet engine components and gas turbines. Super alloys do not rust and retain their physical and chemical properties at high temperatures. Super alloys consist of iron, cobalt, nickel, chromium, tungsten, aluminum, and titanium. Co-56Ĭobalt's most important application is the production of super alloys. Cobalt-60 is also used to treat cancer, because the radiation it gives off kills cancer cells. Co-57,58 are also used for the same purpose. Cobalt-60 is one of the most commonly used radioactive isotopes and is used in medicine to find a treat certain diseases including the Schilling test which determines if a patients body is making and using vitamin B 12 effectively. A radioactive isotope which splits apart and emits radiation. There are also 10 radioactive isotopes of cobalt that are currently known. The mass number is the number of protons and neutrons contained in the nucleus of the atom.The number of neutrons in a atom is how elements vary, this variation is called an isotope. The number written on the right of an element i.e 59 is the mass number. Isotopes are different because of their mass number.
Isotopes are two or more forms a element. Table 1: Properties of Cobalt Atomic NumberĬobalt has one naturally occurring isotope which is cobalt 59. The density is 8.9 grams per cubic centimeter. Cobalt's melting point is 1495 degrees C with a boiling point of 2870 degrees C. When cobalt is combined with another metal to make an alloy its magnetic properties are even more apparent than the individual metal of cobalt. Next to nickel and iron, cobalt is one of the three naturally occurring magnetic metals. Malleable means is the ability of being hammered into thin sheets. Ductile means the metals ability to be drawn into thin wires. Although cobalt is ductile it is also somewhat malleable. The word cobalt is from the German word kobold, which means "goblin" or "evil spirit" this term was used by miners that was really difficult to mine and harmful to the miners health.Ĭobalt is a sturdy, gray metal which resembles iron and nickel. It is used in many places today, such as, magnets materials, paint pigments, glasses, and even cancer therapy. Cobalt was first discovered in 1735 by George Brandt in Stockholm Sweden. The atomic number of Cobalt is 27 with an atomic mass of 58.933195. A ligand exchange reaction involving chloride ionsĬobalt (Co) lies with the transition metals on the periodic table.The reaction of hexaaquacobalt(II) ions with carbonate ions.With sodium hydroxide solution and hydrogen peroxide.With ammonia solution and hydrogen peroxide.Another oxidation of hexaaquacobalt(II) ions.Ligand Exchange of hexaaquacobalt(II) ions with ammonia solution.Ligand Exchange of hexaaquacobalt(II) ions with hydroxide ions.
0 kommentar(er)
