2. We want to study the ionization potential, i.e. the energy needed to take an electron away from a system, for several hydrogenic atoms. We will
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We want to study the ionization potential, i.e. the energy needed to take an electron away from a system, for

several hydrogenic atoms. We will assume that the electron always starts in the ground state of the system.


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2. We want to study the ionization potential, i.e. the energy needed to take an electron
away from a system, for several hydrogenic atoms. We will assume that the electron
always starts in the ground state of the system.
(a) Consider first hydrogen 'H and its two isotopes: deuterium H and tritium $H.
Do they have different ionization potentials? If yes, compute the ratio of the
ionization potential for deuterium and hydrogen and the ratio for tritium and
hydrogen. Hint: Remember that the mass that enters the eigenvalues of the
H atom Hamiltonian is a reduced mass.
(b) Now consider Het, K18+ and Ult. Compute the ratios of the ionization po-
tentials of these atoms with the hydrogen atom.

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