Ice-cream Posted September 29, 2004 Share Posted September 29, 2004 Can some1 help me out! I know that copper can form Cu2+ ion but how does this actually happen? I know it is a transition metal and that it can form more than 1 ion, but can some1 give me an example of how it actually forms a 2+ ion? What does it bond with for that to happen? Thanks! Link to comment Share on other sites More sharing options...
5614 Posted September 29, 2004 Share Posted September 29, 2004 in electrolysis Cu2+ can gain electrons to become Cu. to make Cu2+ just oxidise some Cu. Link to comment Share on other sites More sharing options...
5614 Posted September 29, 2004 Share Posted September 29, 2004 ok, i cant edit my post for some reason, so heres an add-on H2O2 is a very strong oxidiser Link to comment Share on other sites More sharing options...
Ice-cream Posted October 1, 2004 Author Share Posted October 1, 2004 ahhhhhhhhhh....icic, thanks heap Link to comment Share on other sites More sharing options...
YT2095 Posted October 1, 2004 Share Posted October 1, 2004 Copper is what`s known as "Divalent" Cation. it can form Copper (I) oxide and Copper (II) oxides, respectively: CuO and Cu2O. lookup Valency or Divalent in Google too, it`ll give you plenty more data Link to comment Share on other sites More sharing options...
Ice-cream Posted October 1, 2004 Author Share Posted October 1, 2004 hey does any1 know of useful websites becoz i tried divalent on google search and it gave info that I don't quite understand (I'm in grade 12 Australia) Link to comment Share on other sites More sharing options...
YT2095 Posted October 1, 2004 Share Posted October 1, 2004 Chemistry: A number which reflects an element's ability to combine with other elements Definition: An atom or radical group which has a valence of two, or which can combine with two (rather than one) different other atoms or molecules. taken from: http://www.hyperdictionary.com/dictionary/divalent this may help: http://www.webelements.com/webelements/elements/text/Cu/key.html and in the same page, check out the Oxides of Copper too Link to comment Share on other sites More sharing options...
Ice-cream Posted October 10, 2004 Author Share Posted October 10, 2004 its obvious that Cu has 1 electron on the outer shell so how come sometimes it forms Cu2+ and sometimes Cu+? it wouldn't be stable if it lost 2 electrons isn't that right? what determines whether it forms cupric or cuprous? Link to comment Share on other sites More sharing options...
budullewraagh Posted October 10, 2004 Share Posted October 10, 2004 transition metals get "excited" electrons sometimes; electrons jump to a higher energy level. when they jump back, they release energy as visible light. copper+2 cations are +2 because they have an extra excited electron Link to comment Share on other sites More sharing options...
Ice-cream Posted October 10, 2004 Author Share Posted October 10, 2004 can u give a bit more explanation on that? r there any websites with more details on that? Link to comment Share on other sites More sharing options...
budullewraagh Posted October 10, 2004 Share Posted October 10, 2004 http://www.iop.org/EJ/abstract/0953-8984/14/27/201/ Link to comment Share on other sites More sharing options...
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