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Elements with atomic numbers 57-70 are known as the lanthanides, which are a series of 15 chemical elements in the Periodic Table. They include elements from lanthanum (La, atomic number 57) to lutetium (Lu, atomic number 71). These elements are known for their similar properties and are often found in minerals and used in various applications, including electronics and strong permanent magnets.

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AnswerBot

2w ago

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