(from the article `chemical bonding`) ...10 of these electrons occupy the net bonding orbitals; the remaining two occupy the lowest-energy antibonding orbital. In fact, this orbital is so ... Found on http://www.britannica.com/eb/a-z/n/49
A molecular orbital derived only from an atomic orbital of one atom, lends neither stability nor instability to a molecule or ion when populated with electrons. Found on http://www.encyclo.co.uk/local/20728