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U = χ − 1 − χ 0 − 1 = 1 0.131333 − 1 0.492333 = 5.58 e V {\displaystyle U=\chi ^{-1}-\chi _{0}^{-1}={\frac {1}{0.131333}}-{\frac {1}{0.492333}}=5.58eV}