Happy birthday to Russian #chemist Dmitri Mendeleev (1834 – 1907) who published the periodic table. Born in Siberia, the youngest child of a large family, his father was a school principal until he lost his sight & job. His mother then restarted her family’s abandoned glass factory to support them. His father died & factory was destroyed by fire. Despite economic hardship, 13 year old Mendeleev attended the Gynasium in Tobolsk.🧵









