R
- Sir William Ramsay (1852-1916)
- Born in Scotland.
- He discovered argon, helium, neon, krypton, and xenon
- He synthesized pyridine.
- Sir Ernest Rutherford (1871-1937)
- Born in New Zealand.
- He was the first to prove the decay of heavy elements and to carry out a transmutation reaction.
- He discovered the half-life of radioactive elements.
- He was awarded the Nobel Prize in chemistry in 1908.
