nonmetals usually have lower conductivity
nonmetal is chemical_element. cohesiveness is non_aspectual_quantity. electrical_conductance is non_aspectual_quantity. rigidness is non_aspectual_quantity. level_of_stability is non_aspectual_quantity. activity is non_aspectual_quantity. conductress is conductor. nonphysical_part_predicate is part_predicate. thermal_conductivity is non_aspectual_quantity.