Core electron example sentences

Therefore, it is easier shielding or screening of the valence electron from the nucleus by the intervening core electrons.The first ionization enthalpy of group 14 members is higher than the corresponding members of group 1 The influence of inner core electrons is visible here also.The effective nuclear charge experienced by a valence electron in an atom will be less than the actual charge on the nucleus because of shielding or screening of the valence electron from the nucleus by the intervening core electrons.