Question

Which lists the elements in order from most conductive to least conductive?

potassium (K), selenium (Se), germanium (Ge)
germanium (Ge), potassium (K), selenium (Se)
selenium (Se), germanium (Ge), potassium (K)
potassium (K), germanium (Ge), selenium (Se)

Answer 1

potassium (K), germanium (Ge), selenium (Se)

K is a metal with high electrical conductivity, Ge is a metalloid/semiconductor with moderate conductivity, and Se is a nonmetal and a poor conductor.