1) Archaic term for radon 2) Element now called radon 3) Former name for radon 4) Former name of radon 5) Radon formerly 6) Radon once 7) Village on the Isle of Wight Found on https://www.crosswordclues.com/clue/niton
[The Reason] `Niton (The Reason)` is a single by Swedish DJ and producer, Eric Prydz. It was released by digital download on February 6th, 2011 on Ministry of Sound. The music video was uploaded to YouTube on December 9th, 2010. On February 13th, 2011, the song entered the UK Singles Chart at number 45. ==Critical reception== Robert Copsey ... Found on http://en.wikipedia.org/wiki/Niton_(The_Reason)