Talk:Radon-222

Emanation symbol
One sometimes finds the symbol Em when this was the element's name; I wonder if it goes back to Rutherford? Double sharp (talk) 12:22, 3 February 2021 (UTC)

Comparison of three even-even nuclides with medium beta decay half-lives
129.104.241.162 (talk) 03:26, 6 March 2024 (UTC)