Chemical formula of cobalt

Answer 1

Cobalt is a metal element. It is lustrous, silver-gray, hard but brittle, and not found as a free metal, but more generally in various ores. Cobalt as a 'stand-alone' chemical is a by-product of the copper and nickel mining industry.

It is ferromagnetic, i.e. it can be magnetized. And in the chemical Periodic Table it is a transition metal. It is stable in air and not affected by water, but dilute acids can attack it, causing the resulting compounds to become dispersed into soil or water sediments. Cobalt is chemically active in that it readily combines with other elements to form many different compounds. e.g. salts and oxides etc. It is an essential ingredient in a variety of metal alloys, and is an important component of many inks, dies, paints, varnishes, and in ceramics, where it produces a brilliant and permanent blue. Chemical Data:

* Atomic number 27 * Symbol Co * Formula of cobalt/water solution [Co(H2O)6]2+ * Atomic mass/weightof Cobalt 58.9332 g.mol -1 * Mohs hardness 5.0 * Crystal structure hexagonal * Density (Specific gravity) 8.9 g.cm-3 at 20°C * Boiling point 2927 °C * Melting point 1495 °C * Metalic/Magnetic Permeability[i.e. the willingness of the metal to become magnetised] About two thirds that of iron. * Electron Configuration: [Ar]4s23d7 Electrical Data:

* Resistivity 62.4 nΩ·m at 20 °C * Standard potential - 0.28 V ( Co2+/ Co ) ; +1.84 V ( Co3+/ Co2+ ) * Electronegativity 1.88 (Pauling scale) More cobalt facts

There are many isotopes of cobalt, all differing in nuclear but not in chemical properties. Most of the radioactive isotopes of cobalt have a half-life of less than 18 hours, most of which having a half-life of less than 1 second. The isotope Cobalt-60 is used for treatment of cancer, sterilization of medical supplies, and medical testing. But acutely high doses of the gamma radiation from cobalt-60 will cause burns, increased cancer risks and death. Cobalt is a part of Vitamin B12. The normal bodily intake of cobalt is extremely small, but essential for animal (including human) life and health. However, cobalt in higher amounts is considered to be possibly carcinogenic, so exposure to metal fumes and dust should be limited. For more information see 'Related Links' below

Answer 2

that it is in the metal part of the periodic table it is in group 9 of the table and in period 4 of the table and it has a mass of 59 and a atomic number of 27 * Cobalt colours glass a deep blue colour. * It is a greyish tinge * It is brittle and hard with properties similar to those of iron * Can be found in meterorites * Can also be found in Marmite

Answer 3

It is brittle, but hard.

It is ferromagnetic (able to be magnetised)

It is unstable

It is radioactive

It is lustrous

It is not dissimilar to the original element;

59

Cobalt ELEMENT

27

60

Cobalt ISOTOPE

27

Answer 4

Colbalt is an element whose chemical symbol is Co.

Answer 5

I have some chemical characteristics for Cobalt. 1)Full name of Cobalt: Cobalt(evil spirit) 2)Chemical symbol: Co 3)Atomic number: 27 4)Atomic Mass: 58.93

Answer 6

Cobalt, Co, is an ELEMENT, atom number 27 in the Per. Syst.

just after Fe (26) and before Ni (28)

Answer 7

it's usually wicked hard

Answer 8

lindi is the properties of cobalt

Answer 9

Co9S8