Suppose you are trying to find the identity of an unknown pure substance. the valence electrons of the substance's atoms feel an effective nuclear charge of +1. if this substance's atoms have larger radii than potassium (k) atoms, what other characteristics would you expect the substance to exhibit? ait would have higher ionization energies than k and a higher electronegativity value than k. bit would have higher ionization energies than k and a lower electronegativity value than k. cit would have lower ionization energies than k and a higher electronegativity value than k. dit would have lower ionization energies than k and a lower electronegativity value than k.