What element has the symbol 'Re'?

The story behind the answer

‘Re’ is the chemical symbol for Rhenium (atomic number 75). The other choices have different symbols: Radium = Ra, Rhodium = Rh, and Rubidium = Rb.

Rhenium is an ultra-rare, very dense metal with one of the highest melting points (about 3186°C). It’s crucial in superalloys for jet engine turbines and as a catalyst (e.g.,