Americium electron system

Tn accordance with its electronic configuration and the resulting posi-tion in the periodic system of elements the actinide element americium is the heavy homolog of the rare earth element europium (14) ... 

The orbital polarization scheme has been applied to several systems (see references above) where it improved the agreement between theory and experiment. A recent application to americium was reported by Soderlind et al.,[110] who examined structural changes of Am under pressure. The results were consistent with a high-pressure phase with delocalized 5/ electrons and a low-pressure phase with localized and non-bonding 5/ states, a Mott transition. 

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