Do you remember the first time you walked into the chemistry laboratory in your school? Are there any ... it is Russian chemist and inventor Dmitri Mendeleev’s name that is always at the forefront.

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.

National Periodic Table Day, observed annually on February 7, honors one of the most significant achievements in scientific ...