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 name originates from the German word kupfernickel, which means "false copper" from the illusory copper color of the ore.\)Ĭobalt is a sturdy, gray metal which resembles iron and nickel. The bulk of mined nickel comes from laterite and magmatic sulfide ores. Nickel is sometimes found free in nature but is more commonly found in ores. It is one of four elements that are ferromagnetic and is used in the production of various type of magnets for commercial use. Nickel is a hard and ductile transition metal that is considered corrosion-resistant because of its slow rate of oxidation. In its elemental form, nickel has a lustrous metallic silver appearance. The nickel atom has a radius of 124 pm and a Van der Waals radius of 184 pm. Nickel was first discovered by Alex Constedt in 1751. The number of electrons in each of nickel's shells is and its electron configuration is 3d 8 4s 2. Nickel (atomic symbol: Ni, atomic number: 28) is a Block D, Group 4, Period 4 element with an atomic weight of 58.6934. Lithium is the key component of lithium-ion battery technology, which is becoming increasingly more prevalent in electronics. Because of its high reactivity, elemental lithium does not occur in nature. In its elemental form, lithium is soft enough to cut with a knife its silvery white appearance quickly darkens when exposed to air. Compared to other metals, it has one of the lowest boiling points. It has the highest specific heat and electrochemical potential of any element on the period table and the lowest density of any elements that are solid at room temperature. The origin of the name Lithium comes from the Greek word lithose which means "stone." Lithium is a member of the alkali group of metals. Lithium was discovered by Johann Arvedson in 1817 and first isolated by William Thomas Brande in 1821. The lithium atom has a radius of 152 pm and a Van der Waals radius of 181 pm. The number of electrons in each of Lithium's shells is and its electron configuration is 2s 1. Lithium (atomic symbol: Li, atomic number: 3) is a Block S, Group 1, Period 2 element with an atomic weight of 6.94. The origin of the word Cobalt comes from the German word "Kobalt" or "Kobold," which translates as "goblin," "elf" or "evil spirit. Co-60, a commercially important radioisotope, is useful as a radioactive tracer and gamma ray source. Cobalt is a ferromagnetic metal and is used primarily in the production of magnetic and high-strength superalloys. Cobalt produces brilliant blue pigments which have been used since ancient times to color paint and glass. Cobalt is found in cobaltite, erythrite, glaucodot and skutterudite ores. In its elemental form, cobalt has a lustrous gray appearance. Cobalt was first discovered by George Brandt in 1732. The cobalt atom has a radius of 125 pm and a Van der Waals radius of 192 pm. The number of electrons in each of cobalt's shells is 2, 8, 15, 2 and its electron configuration is 3d 7 4s 2. Cobalt (atomic symbol: Co, atomic number: 27) is a Block D, Group 9, Period 4 element with an atomic weight of 58.933195. Thin Film Deposition & Evaporation Materials.Additive Manufacturing & 3D Printing Materials.
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