Calculations reveal ground-state energy values for beryllium-like atoms, suggesting a simpler formula for atomic energy in early periodic elements.
Starting with the common variational calculation of the ground-state energy of the helium atom, we calculate the ground-state energy of beryllium and beryllium-like atoms. Using this method we have obtained a simple formula for the ground-state energies of the first four atoms of the periodic table. This work is an extension of a result we previously reported for lithium.
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A Saleh-Jahromi (2006) studied this question.
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