Keywords: Chem507f09sqvstet2.png en boo own Chem507f096 Check categories 2010 January 10 en wikipedia 18-Electron_rule 3 Original upload log wikitable - - 2009-12-04 10 54 27 464 × 231 4223 bytes Chem507f096 <nowiki> en boo own Chem507f096 </nowiki> chemistry Inorganic chemistry Chemical bonding Rules of thumb |