File talk:Il sistema periodico.png

Although the name of the .png does not reflect it, this file is for illustrating the article The Periodic Table (book).

Arsenic is missing
Arsenic -- As, atomic number 33 -- for story #15 is missing from the chart. It would fall directly below phosphorus (P). Can someone please fix this? -- 99.120.130.167 (talk) 06:44, 25 October 2012 (UTC)