Assume that there is no repulsive force between the electrons in an atom but the force between positive and negative charges is given by Coulomb’s law as usual. Under such circumstances, calculate the ground state energy of a He-atom.
Assume that there is no repulsive force between the electrons in an atom but the force between positive and negative charges is given by Coulomb’s law as usual. Under such circumstances, calculate the ground state energy of a He-atom.
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1 Answer
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This is a Short Answer Type Questions as classified in NCERT Exemplar
Explanation- For a He -nucleus with charge 2e and electrons of charge− e, the energy level in ground state is
E=-13.6Z2/n2= -54.4eV
Thus, the ground state will have two electrons each of energy E and the total ground state
energy would be - (4×13.6)eV = -54.4eV.
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