this.atom.setSymbol(formerSymbol);
try {
IsotopeFactory ifac = XMLIsotopeFactory.getInstance(atom.getBuilder());
this.atom.setMassNumber(ifac.getMajorIsotope(formerSymbol).getMassNumber());
chemModelRelay.updateAtom(atom);
ifac.configure(atom);
} catch (OptionalDataException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block