What elements are least abundant in the universe?

1 Answer
Jul 11, 2018

Well, we would ASSUME the transuranics…..


The most abundant element in the universe is hydrogen... See this site that lists the most abundant elements.

And see this graph from the same site

Technetium metal, whose name literally means #"made by the hand"#, and which has a special application in radiopharmeceuticals, may only be present on Earth in a 20000 tonne mass....