#Periodic table atomic number cr free
These include chromium(III) oxide (green), lead chromate (yellow), anhydrous chromium(III) chloride (purple), and chromium trioxide (red).Ĭhromium is only found rarely as a free element in nature. It will not react with water.Ĭhromium is known for its many colorful compounds. Chromium can be polished to achieve a shiny mirror-like finish that is resistant to corrosion.įor a metal, chromium is fairly active and will react with many other metals as well as with oxygen. When it is exposed to air a thin layer of chromium oxide forms over the surface which protects the metal from further reaction with the air. Under standard conditions chromium is a hard silvery metal with a bluish tint. Chromium atoms have 24 electrons and 24 protons with the most abundant isotope having 28 neutrons. Write Electronic Structure of Chromium.Chromium is the first element in the sixth column of the periodic table. Show Electronic configuration of Chromium.
On which block Chromium element is present? In chromium 2electron present in k shell, 8 electrons present in L shell,13 electron present in M shell and remaining 1electron present in N shellģ) Valency : chromium show generally 2, 3,4,5,6 valency In chromium atom maximum 6 electron is In outer shellĤ) Atomic radius : atomic radius of chromium is 166 pmġ) It is mainly use to make stainless steel.Ĥ) It act as a inhibitor of corrosion because it’s resist of corrosionĥ) It is use in medicine for treatment of depressionĦ) It is also use as a catalyst in chemical reactionħ) It is use to formation of dye and paintsĨ) It is use in body to blood sugar for controlling diabetes. In this isotope 24 proton, 24 electron and 26 neutron is present It is present 4.3 %ĥ2Cr : atomic weight of this isotope is 51.9 amu In this isotope 24 proton, 24 electron and 28 neutron is present It is present 83.7%ĥ3Cr : atomic weight of this isotope is 52.9 amu In this isotope 24 proton, 24 electron and 29 neutron is present It is present 9.5%ĥ4Cr: atomic weight of this isotope is 53.9 amu In this isotope 24 proton, 24 electron and 30 neutron is present It is present 2.3%Įlectronic configuration of chromium atom is : 1S 2 2S 2 2P 6 3S 2 3P 6 3d 5 4S 1Įlectronic configuration in concert of shell is 2,8,13,1 Meaning of this word is colourġ) Atomic symbol: chromium is denoted by the symbol Cr.Ģ) Atomic number : atomic number of chromium is 24 In chromium atom 24 electron and 24 proton is present.ģ) Atomic weight/ mass: : Atomic weight of chromium is 51.9 amu In chromium atom 24 proton and 28 neutron is present.Ĥ) Position : it is place in 4 th row ( period) and 6 th column ( group)Ħ) Colour : chromium show steel grey colourġ0) Boiling point : boiling point of chromium is 2671 0 Cġ1) Melting point : melting point of chromium is 19070 Cĥ0Cr : atomic weight of this isotope is 40.9 amu
Vanadium word is originated from Greek word ‘ chroma ‘. it is use from ancient times Chromium show anti ferromagnetic properties.ĭiscovery : chromium is discovered in 1798 by French chemist Nicholas Louris Vauqualin 21 stnumber element found in earth crust by their mass contain.
It is found from earth crust in the form of chromite. Yeast, wheat, kidney are rich in chromium. it show anti Corrosion nature hence add in manufacturing in steel. It show lustrous, hard, brittle properties. Atomic Mass, Number, Physical, Chemical properties, Electronic configuration, Valency, Chemical reaction, UsesĬhromium 4 th number transition metal. Chromium – Learn all details regarding Chromium in Periodic Table i.e.
0 kommentar(er)
