Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
One-electron levels in Al7−, C, Al7C−, O, and Al7O−. The continuous thin lines represent single occupied levels, the continuous thicker lines represent double occupied levels, the dotted thin lines correspond to single unfilled states, the dotted thicker lines correspond to double unfilled states, and the arrows indicate the majority (up) and minority (down) spin states.
