Most transuranium elements have only been synthesized for

Scientists synthesize a transuranium element through artificial transmutation of a lighter element. This element is produced mostly for research but some are synthesized primarily for industrial use.

Transuranium elements are artificially-generated, synthetic elements. They are formed/synthesized by nuclear reactors or particle accelerators. As elements increases, their respective half-lives of elements decrease.

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1. b.

2. d.

3. a.

5. d.

6. c.

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