One of the low-energy geometries of digermane, Ge₂H₂, is ethene-like. The Lewis dot structure shown

is one of three Lewis dot resonant forms. The order of the Ge€•Ge bond has been described as between two and three. Bond orders above two rely on the lone electrons participating in bonding. The five highest-energy occupied valence molecular orbitals are shown next. Classify the MOs as localized or delocalized, σ or Ï€ bonds, and bonding, non-bonding, or anti-bonding.

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