Question

Imagine your homework assignment involves identifying 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?

Answer 1

It would have higher ionization energies than K and a higher electronegativity value than K.
It would have higher ionization energies than K and a lower electronegativity value than K.
It would have lower ionization energies than K and a higher electronegativity value than K.
It would have lower ionization energies than K and a lower electronegativity value than K.