Would you expect the first ionization enthalpies for two isotopes of the same element to be the same or different? Justify your answer.

(N/A) Isotopes are atoms of the same element that have the same atomic number but different mass numbers.
Since they have the same atomic number,they possess the same number of electrons and the same nuclear charge (number of protons).
Ionization enthalpy depends on the electronic configuration and the effective nuclear charge experienced by the valence electrons.
Since both isotopes have identical electronic configurations and effective nuclear charges,their first ionization enthalpies are expected to be the same.