#Periodic table of elements cr free#
Chromium is somewhat reactive metal and hence it is not found in its free state in nature.The melting point and boiling point of chromium is 2180 K and 2944 K respectively.Chromium has many isotopes, out of which the most abundant isotope is 52Cr.Chromium has a density of 7.19 g/cm 3 and its atomic mass is 51.996 u.Chromium has a silvery-gray metallic appearance.Here is a list of some physical properties and chemical properties of chromium. Chromium is mostly used in industries as an alloying element with other metals to increase its strength and other properties.The leading producer of chromium in the entire world is South Africa.Earth’s crust has around 100 ppm concentration of chromium element.Chromite is the ore from which the majority of chromium is obtained.Chromium is the 21 st most abundant element present in the earth’s crust.Chromium is the 3 rd hardest element found on the entire periodic table (first is carbon (diamond) and second is boron).The name “Chromium” came from the Greek word “chroma”, which means color.Here are a few interesting facts about chromium 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 chromium Appearance of chromium Silvery gray metallic appearance Atomic number of chromium 24 Symbol of chromium Cr Atomic mass of chromium 51.996 u Protons, Neutrons & Electrons in chromium Protons: 24, Neutrons: 28, Electrons: 24 State of chromium (at STP) Solid Group number of chromium in periodic table 6 Period number of chromium in periodic table 4 Block of chromium in periodic table d-block Category of chromium Transition metals Bohr model or Electrons per shell or Electrons arrangement in chromium 2, 8, 13, 1 Electron configuration of chromium 3d 5 4s 1 Orbital diagram of chromium Electronegativity of chromium (on pauling scale) 1.66 Atomic radius of chromium (van der Waals radius) 189 picometers Density of chromium 7.19 g/cm 3 1st ionization energy of chromium 6.767 eV Main isotope of chromium 52Cr Melting point of chromium 2180 K or 1907 ☌ or 3465 ☏ Boiling point of chromium 2944 K or 2671 ☌ or 4840 ☏ Crystal structure of chromium Body Centered Cubic (BCC) Discovery of chromium By Louis Nicolas Vauquelin in 1794Īlso 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 chromium element is given in the table below.
Uses of Chromium Chromium Element (Information Table).There is a lot more information related to chromium which is mentioned in the Information Table given below. Chromium is in the d-block and it is classified as a transition element on the periodic table. Chromium element (Cr) is in group 6 and period 4 of a periodic table.
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