In which part of the nephron are sodium and chloride ions actively reabsorbed?

The part of the nephron that In which part of the nephron are sodium and chloride ions are actively reabsorbed is the Henle's loop. It is the portion of a nephron that leads from the proximal convoluted tubule to the distal convoluted tubule. It's main function is to make a concentration gradient in the medulla of the kidney.