On 17 February 1869, Russian chemist Dmitri Mendeleev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights and inventing the periodic table. He ...

Dmitri Mendeleev was a Russian chemist and inventor who formulated the Periodic Law and the periodic table of elements. Mendeleev was born in the Siberian town of Tobolsk. His father died when ...

It's hard to imagine today, but when scientists introduced the periodic table, it was merely a conjecture. It had to fight for attention and defend itself against attacks, and could easily have been ...