Question

which of the following elements is a transuranium element? plutonium erbium neodymium thorium question 11 which of the following groups contains mostly radioactive elements?

Explanation:

Transuranium elements are elements with atomic number greater than 92 (uranium). Plutonium has an atomic number of 94, making it a transuranium element. Erbium has an atomic number of 68, neodymium has an atomic number of 60, and thorium has an atomic number of 90, none of which are transuranium elements.

Answer:

plutonium