Nobel Laureate co-discovered argon and explained the phenomenon of Rayleigh scattering

100th Anniversary: Death of Lord Rayleigh
225th Anniversary: Death of Antoine Lavoisier
French nobleman considered the father of modern chemistry
100th Birthday: Donald J. Cram
Chemistry Nobel Laureate and a pioneer of host–guest chemistry
100th Birthday: Larned B. Asprey
Pioneer of actinide and fluoride chemistry and Manhattan Project worker
125th Birthday: Izaak Kolthoff
Considered one of the fathers of modern analytical chemistry
150th Birthday: Richard Abegg
Pioneer of valence theory known for Abegg's rule, a precursor to the octet rule
200th Birthday: James Prescott Joule
English physicist made important breakthroughs in thermodynamics—without a university education
100th Birthday: Ernst Otto Fischer
Nobel Laureate co-discovered the structure of ferrocene
50th Anniversary: Death of Lise Meitner
Co-discoverer of nuclear fission
100th Birthday: Sir Derek Barton
British Chemistry Nobel Laureate pioneered conformational analysis