The Periodic Table of the Elements: 150 years of science

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On March 6, 1869, scientist Dmitry Mendeleev revolutionized the world of science by presenting his work on the periodic table of elements. Take a look at 150 years of history of the famous Periodic Table of the Elements.
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150 years ago, the world witnessed one of the greatest scientific discoveries when a work called "The Dependence Between the Properties of Atomic Masses of Elements" came to light. Indeed, on March 6, 1869, the scientist Dmitry Mendeleev revolutionized the world of science by presenting his work on the periodic table of elements, better known today as the "Mendeleev table" or "periodic table". elements ".

“For the chemist Normand Voyer, professor at Laval University, the creation of the periodic table is a typical example of great scientific discoveries whose importance transcends the worlds of chemistry, physics, mathematics and biology. "

Source: Radio-Canada, February 15, 2019

The periodic table of the elements was therefore invented 150 years ago, but it remains today the reference tool for understanding how the world around us is made and continues to evolve with new discoveries.

“Today, it has 118 elements and is full of information: above the letter that symbolizes the element, the color of the atomic number indicates whether it is solid, liquid or gaseous. If the border of the box is a black line, this means that this element is essential, that is to say that it is naturally present on the planet (like iron or arsenic), and not produced by the decay of other elements (in this case, the border takes the form of dashes). "

Source: Time, 2019

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