What Ten Radioactive Elements Have the Longest Half-Lives?

[Marlin]

What Ten Radioactive Elements Have the Longest Half-Lives?

http://www.realclearscience.com/articles/2016/01/14/quizzes_what_ten_radioactive_elements_have_the_longest_half-lives.html

[GLW]

there has never been a good mnemonic for this one,....

[Mike McFarlin]

Bismuth, Radium, Thorium, Protactinium, Curium, Plutonium, Uranium, Neptunium, Americium, Technicium

[OldHP]

Folks tend to forget about Bismuth, Protactinium, and Neptunium unless they have them in large supply, or they cause a problem at their location!  But, too bad

there has never been a good mnemonic for this one,....

if there were, every one in the business could answer without going looking!     (beer not coffee)!

[Rennhack]

(beer not coffee)!

There is an emoji for that...

[SloGlo]

Bismuth, Radium, Thorium, Protactinium, Curium, Plutonium, Uranium, Neptunium, Americium, Technicium

eye wood add tellerium-128,barium-130,
germanium-76,
xenon-136, and  tellerium-130.
it's knot rock it science.