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.

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Learn lesser-known facts about this day ... exceptional courage in saving lives or standing up against injustices. 10. The Padma Awards - one of the highest civilian honours of India - are ...

was officially recognized as the 113th element of the periodic table. It was synthesized at RIKEN, a Japanese institute specializing in physical and chemical sciences. Researchers created Nihonium ...

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5 fun facts about octopuses Octopuses have a parrot-like beak , which is the only hard part of their body. The plural of octopus is "octopuses" or "octopi," according to Merriam-Webster .

We present a general method for solving the modified Helmholtz equation without shape approximation for an arbitrary periodic charge distribution, whose solution is known as the Yukawa potential or ...