Multiple choice general knowledge science & technology Rhenium Rh Rf Rb Re Reveal answer Fill a bubble to check yourself D Correct answer Explanation Rhenium is a transition metal with atomic number 75, and its chemical symbol is 'Re'. The name comes from the Rhine river (Rhenium in Latin). Rhodium is 'Rh', Rutherfordium is 'Rf', and Rubidium is 'Rb'.