term,name,definition,category,provenance,provenance_uri,note magnesium,Magnesium,"Magnesium is a chemical element with symbol Mg and atomic number 12. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (Group 2, or alkaline earth metals) of the periodic table: they each have the same electron configuration in their outer electron shell producing a similar crystal structure.",,Wikipedia,https://en.wikipedia.org/wiki/Magnesium,