During his career, Robertson was a one-time NBA champion, one-time NBA MVP, and a twelve-time all-star. Robertson was inducted into the Naismith Memorial Basketball Hall of Fame in 1980 and is considered one of the greatest players to ever play the game.
The Russian chemist Dmitri Mendeleev was the first scientist to make a periodic table similar to the one used today. [citation needed] Mendeleev arranged the elements by atomic mass, corresponding to relative molar mass.
Dmitri Mendeleev as a young chemistry professor at St. Petersburg University Mendeleevâs first Periodic Table (1869) More than 50 years before Mendeleev published his table, German chemist Johann DÃ¶bereiner noticed a mathematical pattern among groups of three elements he called âtriads.â. The Tableâs Origins.