Tom Lehrer's terrific song The Elements is unfortunately lacking in one respect - it is outdated as it does not include the elements discovered/named since the song was written.
Here is one attempt at bringing it up to date but I don't think just adding an extra verse fits well with the rest of the song. I wonder if it is possible to fit in the extra elements but keep the list format, perhaps at the expense of (part of) the last two lines. There is also some flexibility about where to put the "and"s - Lehrer doesn't use them consistently and even throws in an "also" in one place.