Questions with the keyword 'periodic table'

• Which element of the Periodic Table is the hardest to pronounce in your opinion? mine is uuonoctium by anon-240763 to Antoine Comments: (so far, 3s comments )
• why is hydrogen all alone in the Periodic Table? by anon-240763 to Tom, Rebecca, Emily, Elspeth, Ben, Antoine Comments: (No comments so far )