A. `Lambda_(m)` (molar conductivity) is the conductivity due to number of ions furnished by one mole of electrolyte. As dilution increases number of ions present in the solution increases hence molar conductivity increases.
B. `E_("cell")^(@)` of any atom/ion does not depend upon number of atom/ion, hence `E_("cell)^(@)` of any atom/ion is anintensive properties.
C. k represents specific conductivity which depends upon number of ions present in per unit volume.
D. `Delta_(r)G_("cell")` is an extensive property as it depends upon number of particles (species.)
