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She and her husband discovered the polonium and radium.(1898)

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There are 118 elements

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The periodic table was made to arrange the elements

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Dmitri Mendeleev made the first periodic table

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The periodic table is classified in groups and columns

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Mendeleev’s table did more than foretell the existence of new elements. It validated the then-controversial belief in the reality of atoms.

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A family it’s a column of elements in a periodic table, there are 18 numbered groups of, but the 3 and 4 aren’t numbered.

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Mendeleev published his periodic table in 1869

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It is organized by atomic weight and put similar elements into horizontal rows

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It summarizes an entire science in 100 or so squares containing symbols and numbers.

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It was written in Russian and the translation for the title was “Draft of system of elements: based on their atomic masses and chemical characteristics.”

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An atom is the smallest unit of ordinary matter that forms a chemical element

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a pure substance which cannot be broken down by chemical means, consisting of atoms which have identical numbers of protons in their atomic nuclei

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His law revealed profound familial relationships among the known chemical elements.

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There are 18 groups in the periodic table

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Alkali Metals.
Alkaline Earth Metals.
Transition metals.
Metaloids.
Other metals

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There are 7 periods in the periodic table

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There are eight groups and seven periods in his table.

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The elements are arranged by atomic number, electron configuration and recurring chemical properties.

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The table of elements contains all of the known chemical elements in an informative array.

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Is one of the most important advances in the chemistry.

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He organized it as a vertical chart that had 63 elements

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It was the base for other versions of the periodic table.

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He predicted this atomic weights and their characteristics.

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It was the first periodic table.

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Semi-metals.
Halogens.
Noble Gases.
Other non-metals

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It is distributed by the atomic mass, from the lower to the highest.

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Every element had his own story about his name, but these are abbreviations of Latin words.

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Oxygen atoms weighed eight times as much as hydrogen atoms; carbon atoms were six times as heavy as hydrogen, Dalton believed.

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When elements combined to make new substances, the amounts that reacted could be calculated with knowledge of those atomic weights.

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Bohr was the first to discover that electrons travel in separate orbits around the nucleus and that the number of electrons in the outer orbit determines the properties of an element.

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Bohr was the first to discover that electrons travel in separate orbits around the nucleus and that the number of electrons in the outer orbit determines the properties of an element.

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Bohr created his own version of the table in 1922, based on experimental measurements of electron energies (along with some guidance from the periodic law).

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The actual periodic table was designed in XIX century by some chemists

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In many branches of mathematics, the term map is used to mean a function, sometimes with a specific property of particular importance to that branch.

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Mendeleev had discovered a deep mathematical map of nature, for his table reflected the implications of quantum mechanics, the mathematical rules governing atomic architecture.

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The elements are made by atoms

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The molecules are maded by atoms, and all is maded by molecules

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in 1888, German chemist Johannes Wislicenus declared that the periodicity of the elements’ properties when arranged by weight indicated that atoms are composed of regular arrangements of smaller particles.

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There are 7 periods

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There are 18 groups

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In atomic physics, the Bohr model or Rutherford–Bohr model, presented by Niels Bohr and Ernest Rutherfordin 1913, is a system consisting of a small, dense nucleus surrounded by orbiting electrons—similar to the structure of the Solar System, but with attraction provided by electrostatic forces in place of gravity.
Is the actual atomic model

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Bohr–Sommerfeld model (Refined Bohr model)

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Bohr–Sommerfeld model (Refined Bohr model)

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A. (2020, 7 febrero). How the periodic table went from a sketch to an enduring masterpiece. Science News. https://www.sciencenews.org/article/periodic-table-history-chemical-elements-150-anniversary#:%7E:text=Mendeleev’s%20table%20had%20become%20an,a%20maestro%20of%20chemical%20wizardry.

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By: Constanza Del Peón, Axel Yehudi, Eulalio Aguilera y Allan Carroll.

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By: Constanza Del Peón, Axel Yehudi, Eulalio Aguilera y Allan Carroll.