Which chemical family is composed almost entirely of synthetic elements?
A)the actinides
B)the lanthanides
C)the halogens
D)all of the above
E)none of the above

Question

Quizplus · Accepted Answer

The actinide series consists almost entirely of synthetic elements, that is, elements that have been created artificially in a laboratory or nuclear reactor. These elements are not found naturally on Earth and have only been produced through fission or fusion reactions. The lanthanides, on the other hand, are naturally occurring elements that are commonly found in the Earth's crust, while the halogens are a group of nonmetallic elements that are also found in nature.

Which Chemical Family Is Composed Almost Entirely of Synthetic Elements