", 21 September 2015 (UTC) 
 :::::::::Yes. Sc/Y/La/Ac will be described in detail in the section Sandbh is making. There will be two equal graphs available. After that, we can choose one variant to be the general one for out PTs. (Can you give article(s) that have the two sources?). -   
 :::::::::@Sandbh, a text suggestion. Maybe leave out ""rare earth metals"" completely, even making the quote like: ... ""closer in their chemical properties to lutetium [...] than they are to lanthanum."" REM is another new term to be looked up when reading, adding to the complications. It should be defined elsewhere in the article sure. -  10:40"