Final answer:
The term used to describe the net flux of ions across the membrane when the specific intracellular and extracellular concentrations of ions are given is equilibrium potential.
Step-by-step explanation:
The term used to describe the net flux of ions across the membrane when the specific intracellular and extracellular concentrations of ions are given is equilibrium potential. The equilibrium potential is the point at which the electrochemical forces driving the movement of ions across the membrane are balanced, resulting in no net movement of ions. It is determined by the concentration and charge gradients of the ions.