Question

the naturally occurring actinides​

Answer 1

Answer:-

thorium, protoactinium, uranium, neptunium, and plutonium. The other actinides have been produced artificially in nuclear reactors or particle accelerators (atom-smashers).

Answer 2

Hello.

Here is your answer below,,

All actinides are radioactive and release energy upon radioactive decay, naturally occurring Uranium and thorium, and systematically produce plutonium.

I hope that helps