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La voz del pato Donald y globos flotantes, para explicar en un didáctico vídeo el elemento número 2 de la tabla perídica, el helio. Es un contenido en inglés altam ...
"The d-block elements are found in the middle of the period table. The d-block elements are called transition metals and have valence electrons in d orbital's. The f-block elements,found in the two ro ...
Video Química
"The p-block elements are found on the right side of the periodic table. They include the boron, carbon, nitrogen, oxygen and florine families in addition to the noble gases. The noble gases have full ...
"Every element has a unique atomic number. The atomic number specifies how many protons an element has in its nucleus. In the periodic table of the elements, elements are arranged in order of ascendin ...
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