Science #Quiz
The cosmic abundance of the elements.
The 4 most common elements, are hydrogen, helium, oxygen, carbon, and xxxxxx.
What is the 5th most common element?
(answer is 15 minutes)
@Armchaircouch @corlin
Note that the question is the "cosmic" abundance, not "earthly."
@EileenKCarpenter @Armchaircouch
Yes I was not trying to trick anyone, It's right there in the first line.