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Periodic table, lanthanide group without symbols

Lanthanides are a group of elements also called "rare earths" because they are in the form of oxides. They form the "internal transition elements" next to the actinides, with which ...

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Periodic table by groups without symbols

Following a classification according to the bonding and ionization properties of the elements, the elements of the periodic table can be classified as:

Metals

Semimetals

No metals

Noble gases

Th ...