![]() The density of cobalt is 8.9 g/cm 3 and its atomic mass is 58.933 u.Cobalt has many isotopes, but the most abundant naturally occurring isotope of cobalt is 59Co.Cobalt has a bluish-gray shiny metallic appearance.Here is a list of some physical properties and chemical properties of cobalt. Cobalt is obtained as a byproduct while mining copper and nickel.Also the cobalt can maintain its magnetism at higher temperatures. Cobalt is naturally magnetic like iron.30% of cobalt is used in paints industries as well as ceramics industries.Cobalt is also present in the human body.The concentration of cobalt in the earth’s crust is around 25 ppm by weight.The name “Cobalt” came from the German word “kobald” (which means “goblin”).Here are a few interesting facts about cobalt element. H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac** Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og *Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu **Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Facts about cobalt Cobalt is a metal and it is classified as a transition element. The Cobalt element (Co) has the atomic number 27 and is located in group 9 and period 4. Appearance of cobalt Bluish shiny gray appearance Atomic number of cobalt 27 Symbol of cobalt Co Atomic mass of cobalt 58.933 u Protons, Neutrons & Electrons in cobalt Protons: 27, Neutrons: 32, Electrons: 27 State of cobalt (at STP) Solid Group number of cobalt in periodic table 9 Period number of cobalt in periodic table 4 Block of cobalt in periodic table d-block Category of cobalt Transition metals Bohr model or Electrons per shell or Electrons arrangement in cobalt 2, 8, 15, 2 Electron configuration of cobalt 3d 7 4s 2 Orbital diagram of cobalt Electronegativity of cobalt (on pauling scale) 1.88 Atomic radius of cobalt (van der Waals radius) 192 picometers Density of cobalt 8.9 g/cm 3 1st ionization energy of cobalt 7.881 eV Main isotope of cobalt 59Co Melting point of cobalt 1768 K or 1495 ☌ or 2723 ☏ Boiling point of cobalt 3200 K or 2927 ☌ or 5301 ☏ Crystal structure of cobalt Hexagonal Close Packing (HCP) Discovery of cobalt By Georg Brandt in 1735Īlso see: Interactive Periodic Table (It has rotating bohr models as well as many other details of all the 118 elements in a single periodic table). The important data related to cobalt element is given in the table below. Uses of Cobalt Cobalt Element (Information Table).There is a lot more information related to cobalt which is mentioned in the Information Table given below. ![]() Cobalt is in the d-block and it is classified as a transition element on the periodic table. Cobalt element (Co) is in group 9 and period 4 of a periodic table.
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