lanthanoids |
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| The lanthanide /ÃËlænøÃâ¢naêd/ or lanthanoid /ÃËlænøÃâ¢nÃâêd/ series of chemical elements[1] comprises the fifteen metallic chemical elements with atomic numbers 57 through 71, from lanthanum through lutetium.[2][3][4] These fifteen lanthanide elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. |
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