Final answer:
An inner transition element is a type of element in the periodic table that includes the lanthanides and actinides. One example of an inner transition element is fermium, which has the atomic number 100.
Step-by-step explanation:
An inner transition element is a type of element in the periodic table that includes the lanthanides and actinides. These elements have their valence electrons in the f orbitals, which are located below the main body of the periodic table. One example of an inner transition element is fermium, which has the atomic number 100. Fermium is part of the actinide series of elements.
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