Chemical reactions of the elementsReaction of lutetium with airLutetium metal tarnishes slowly in air and burns readily to form lutetium (III) oxide, Lu2O3. 4Lu + 3O2 → 2Lu2O3 Reaction of lutetium with waterThe silvery white metal lutetium is quite electropositive and reacts slowly with cold water and quite quickly with hot water to form lutetium hydroxide, Ly(OH)3, and hydrogen gas (H2). 2Lu(s) + 6H2O(g) → 2Lu(OH)3(aq) + 3H2(g) Reaction of lutetium with the halogensLutetium metal reacts with all the halogens to form lutetium(III) halides. So, it reacts with fluorine, F2, chlorine, Cl2, bromine, I2, and iodine, I2, to form respectively lutetium(III) bromide, LuF3, lutetium(III) chloride, LuCl3, lutetium(III) bromide, LuBr3, and lutetium(III) iodide, LuI3. 2Lu(s) + 3F2(g) → 2LuF3(s) [white] 2Lu(s) + 3Cl2(g) → 2LuCl3(s) [white] 2Lu(s) + 3Br2(g) → 2LuBr3(s) [white] 2Lu(s) + 3I2(g) → 2LuI3(s) [brown] Reaction of lutetium with acidsLutetium metal dissolves readily in dilute sulphuric acid to form solutions containing the colourless aquated Lu(III) ion together with hydrogen gas, H2. It is quite likely that Lu3+(aq) exists as largely the complex ion [Lu(OH2)9]3+ 2Lu(s) + 3H2SO4(aq) → 2Lu3+(aq) + 3SO42-(aq) + 3H2(g) Reaction of lutetium with basesWebElements ShopWebElements now has a WebElements shop at which you can buy periodic table posters, mugs, T-shirts, games, molecular models, and more.
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