Its extreme reactivity is such that it was not isolated (via electrolysis) until 1886; it was not isolated chemically until 1986; and its occurrence in an uncombined state in nature was not reported until 2012, and is contentious.
It was not isolated (via electrolysis) until 1886. Its extreme reactivity is such this. It was not isolated chemically until 1986. Its occurrence in an uncombined state in nature was not reported until 2012. Its occurrence in an uncombined state in nature is contentious.