New Insight into Electronic Shells of Metal Clusters: Analogues of   Simple Molecules
  Using Li clusters, a prototype of simple metals, as a test case, we theoretically find that metal clusters can mimic the behavior of simple molecules in electronic shells. It is found that Li14, Li10, and Li8 clusters are exact analogues of F2, N2, and CH4 molecules. 
Longjiu Cheng, and Jinlong Yang
physics.atm-clus