Which of the following statements about lanthanides and actinides is incorrect?
A)The +3 oxidation state is the most common for both lanthanides and actinides.
B)All of the actinide elements are radioactive.
C)All of the lanthanide elements occur in nature.
D)All of the actinide elements are artificially made.
E)Due to similarities in their chemical properties, the actinide elements are not easily separated from each other.

Question

Quizplus · Accepted Answer

Some actinide elements, such as uranium and plutonium, occur naturally in small quantities, while others are artificially synthesized in laboratories.

Which of the Following Statements About Lanthanides and Actinides Is