As we teach our students that oxygen has a valence of 2, it is annoying that they can make a molecule where it has four chemical bonds ;o((
Is it not possible to provide an option to compel compliance with the rules of valence ? Maybe I should post this message on the list of development ? Thanks in advance, best regards, Le 2011-12-19 18:39, Geoffrey Hutchison a écrit : >> Where the problem arises is if I click a second time, we >> obtained a CO triple bond as you can see in attached file. > > While I'm surprised at the hydrogen on the oxygen Avogadro does allow you to > build "strange" molecules. Chemistry is vast and unusual, and people often > want to do calculations or studies on unusual compounds. So yes, you can make > a triple bond between carbon and oxygen, if you wish. > > Thanks and best regards, > -Geoff > > --- > Prof. Geoffrey Hutchison > Department of Chemistry > University of Pittsburgh > tel: (412) 648-0492 > email: [email protected] > web: http://hutchison.chem.pitt.edu/ > -- Physique et Chimie dans le secondaire et pour la préparation au CAPES http://gwenaelm.free.fr/Physique Du nouveau dans le Guppy http://gwenaelm.free.fr/2008-9 ------------------------------------------------------------------------------ Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev _______________________________________________ Avogadro-Discuss mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/avogadro-discuss
