In Science
The chemical element with the atomic number 61 (promethium), a lanthanide, is the element with the secondary lowest ordinal number, which does not possess any stable isotopes. The promethium preceding element with atomic number 60 (neodymium) and the promethium following element 62 (samarium) have all stable isotopes.
Read more about this topic: 61 (number)
Famous quotes containing the word science:
“You are all fundamentalists with a top dressing of science. That is why you are the stupidest of conservatives and reactionists in politics and the most bigoted of obstructionists in science itself. When it comes to getting a move on you are all of the same opinion: stop it, flog it, hang it, dynamite it, stamp it out.”
—George Bernard Shaw (1856–1950)
“The most useful and honorable science and occupation for a woman is the science of housekeeping. I know some that are miserly, very few that are good managers.”
—Michel de Montaigne (1533–1592)