What element has the symbol 'Rh'?

The story behind the answer

‘Rh’ is the chemical symbol for Rhodium, element 45. Rhodium is a rare, silvery member of the platinum group, famed for its extreme reflectivity and for catalyzing reactions in car catalytic converters that reduce harmful NOx emissions. It’s also used to plate white gold and silver jewelry to prevent tarnish.

Memory tip: Rhodium starts with “Rh,” matching its symbol. Don’t mix it up with Rb (Rubidium), Re (Rhenium), or Rn (Radon). The name “rhodium” comes from the Greek rhodon, meaning “rose,” because some of its salts are rose-colored—picture a shiny “rose” metal to lock in Rh = Rhodium.