Answer:
[tex]\frac{131}{53} I[/tex]
Explanation:
A naturally occurring element is an element that is not produced in a nuclear reaction.
Most of the trans-uranium elements are not natural, they are all synthetic elements which are produced as a result of nuclear reactions. They are unknown in nature.
Apart from [tex]\frac{131}{53} I[/tex], all other radioisotopes listed among the options are not natural elements.They are products of nuclear reactions.
