# Radon price: $4/m ? by Bruce Bacher Tags:$4 or m, price, radon
 P: 4 I'm doing some research on Radon. I have to put together a PowerPoint presentation that describes its origins, properties, characteristics, etc. (Each student was assigned a different element.) One piece of information I'm required to report on is current price to purchase a sample of the element. I have found only one source that mentions a purchase price for Radon, and it says "Radon can be purchased for approximately $4/m." - without further explanation. What is "m"?? I assume it must be a unit of volume or mass, but if so I'm not familiar with it. Any ideas?  Sci Advisor PF Gold P: 2,794 Mmmmm metre, that well known unit of mass... Can we see the source?  P: 4 Yes, of course! Sorry, I should have posted that. The actual quote is "Radon is available at a cost of about$4/m." http://www.scescape.net/~woods/elements/radon.html edit: That same source has a table above the text which states that the cost is "$/100g" (no numeric value is given).  P: 4 Radon price:$4/m ? Hmmm... I just found another source that says: "Radon is available at a cost of about $4/m Ci." I know that Ci is a Curie, measuring radioactivity. Could "m Ci" mean mCi: a milli-Curie? edit: second source is http://www.speclab.com/elements/radon.htm Sci Advisor HW Helper P: 6,653  Quote by Bruce Bacher Hmmm... I just found another source that says: "Radon is available at a cost of about$4/m Ci." I know that Ci is a Curie, measuring radioactivity. Could "m Ci" mean mCi: a milli-Curie?