Ok – Mild EleMints: Free Periodic Table Review

Much better then most of the apps out there. This has good info. However, it has no isotopic data on any element past gold. Also, every naturally occurring isotope is presumed stable which is not the case (ex. calcium, tugsten and nickel which are mostly composed of radioactive isotopes with half lives >10^17 years. However, the big error is on potassium whose .01% composition of K40 has a half life of only 10^9 years yet this app says they are stable). Also, there are isotopes that are found in trace amounts on earth (ex. technetium99) yet no data is displayed on such. PLZ FIX!
Review by nc4228 on Mild EleMints: Free Periodic Table.