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In the periodic table of the elements, each row of the table is called the period. The number of levels an atom has determines the period to which it belongs. The first period has only two elements, w ...
Place the discovery of these chemical elements in chronological order.Enlarge or reduce the image with the zoom and adjust its size to the screen of your device. You can also act on the image and drag ...
Display the list and select the discovery of these chemical elements that correspond.Enlarge or reduce the image with the zoom and adjust its size to the screen of your device. You can also act on the ...
Click on the discovery of these chemical elements and drag them to the right places.Enlarge or reduce the image with the zoom and adjust its size to the screen of your device. You can also act on the ...
Semimetals, also known as metalloids, share properties of both metals and nonmetals. Metallic in their appearance, they can be both bright and opaque with an easily modifiable shape but they are not g ...
The periodic table of the elements is the way proposed by Dmitri Mendeléyev in 1869 to arrange the chemical elements, which are ordered by their atomic number, their electron configuration and ...
The periodic table of the elements is the way proposed by Dmitri Mendeléyev in 1869 to arrange the chemical elements, which are ordered by their atomic number, their electron configuration and ...
The periodic table of the elements is the way proposed by Dmitri Mendeléyev in 1869 to arrange the chemical elements, which are ordered by their atomic number, their electron configuration and ...
The periodic table of the elements is the way proposed by Dmitri Mendeléyev in 1869 to arrange the chemical elements, which are ordered by their atomic number, their electron configuration and ...
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"La Tierra es un planeta activo y está en continuo cambio."
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