Question

How many elements constitute lanthanoide series?

Answer 1

Answer:

Explanation:

The series always includes the 14 elements with atomic numbers 58 through 71, which are (in order of increasing atomic number) cerium , praseodymium , neodymium , promethium , samarium , europium , gadolinium , terbium , dysprosium , holmium , erbium , thulium , ytterbium , and lutetium .

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