![]() Similar results are seen for sulphuric acid (H 2SO 4) but pure samples of chromium may be resistant to attack.Ĭhromium metal does not react with nitric acid (HNO 3) and in fact is passivated (make unreactive by altering the surface layer or coating the surface with a thin inert layer). Metallic chromium dissolves in dilute hydrochloric acid (HCL), and forming Cr(II) and hydrogen gas (H 2), and in this aqueous solution, Cr (II) is present as the complex ion 2+.Ĭr (s) + 2 HCL (aq) → Cr 2+ (aq) +2 Cl – (aq) + H 2 (g) Under still milder conditions, The metal reacts with the halogens, and forms Chromium trihalides:Ģ Cr (s) + 3 F 2 (g) → 2 CrF 3 (s) (chromium (III) fluoride)Ģ Cr (s) + 3 Cl 2 (g) → 2 CrCl 3 (s) (chromium (III) chloride)Ģ Cr (s) + 3 Br 2 (g) → 2 CrBr 3 (s) (chromium (III) Bromide)Ģ Cr (s) + 3 I 2 (g) → 2 CrI 3 (s) (chromium (III) Iodide) Isotopes: 50 Cr 51 Cr 52 Cr 53 Cr 54 Cr IsotopeĪChromium doesn’t react with air and water, at normal temperature.Ĭhromium reacts directly with fluorine (F 2), at 400☌ and 200-300 atmospheric pressure, it forms:Ĭr (s) + 3 F 2 (g) → CrF 6 (s) (chromium (VI) fluoride)Ģ Cr (s) + 5 F 2 (g) → 2 CrF 5 (s) (chromium(V) fluoride) Ionization energies: 1st: 653.89 kJ.mol 2nd: 1590.59 kJ/mol 3rd: 2987 kJ/molīody Centered Cubic (BCC) Reactivity of ChromiumĮlectron affinity: 64.3 kJ/mol Nuclear Properties of Chromium Sound Speed: 5940 m/s Atomic Properties of Chromium Molar magnetic susceptibility: 2.314×10 -9 m 3/mol Physical Properties of Chromiumĭensity: 7.19 g/cm 3 (In solid) 6.3 g/cm 3 (In Liquid at M.P) Mass magnetic susceptibility: 44.5×10 -9 m 3/kg Volume magnetic susceptibility: 0.0003177 Magnetic susceptibility (x mol): +280×10 -6 cm 3/mol Neel Point (magnetic ordering temperature) T N: 393 K (Temperature, above which an antiferromagnetic material becomes paramagnetic) Electrical properties of ChromiumĪ Electrical type: Conductor Magnetic Properties of Chromium All the photos shown have probably already been sold but we guarantee that you will get a similar element tile with the same or more weight/size as shown in the picture.Chromium Electron Configuration Thermal Properties of Chromiumĭebye temperature: 460 K (186.85 oC, 368.33 oF) All our tiles will be limited edition, some elements limited to only 10 pieces of the edition. Also each and every tile will be unique with either different size pieces or different weight. And each and every element tile is hand made and hand numbered. Over 70 elements and adding more all the time. 12 different series in most forms of medium, like natural, foil, pellets, ingots, powder, wire, grains etc. What if they could hold, view and collect different forms of different elements in a safe, neat, inexpensive and cool way? And now 15 months later, we are proud to present 2 sizes of Acrylic airtight Tiles. They could always collect the cubes, and although nice for display, they are only showing one medium, and can be expensive to collect. But to collect the raw elements would become messy and could be dangerous. ![]() The size of these tiles is 29mm x 26mm(1 and 1/8 inch x 1 inch.) How was the Periodic Element guy born? An English father of 2 children wanted to wean his children off video games and try and get them interested in Science and the Periodic table of elements, and the different forms they come in. The Periodic Element Guy has produced a whole range of elements in different Mediums protected in airtight acrylic tiles. We have color coded this according to JMOL scheme so each is unique and cheerful. Each tile has a color coded label on the back showing the essential information of the particular element. ![]() The Periodic Element Guys are Proud to present a Crystalline Chromium 99.99% Cr Sample in a Periodic Element Tile.
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