When an element undergoes nuclear transmutation, the result is a completely different

yes, the resulting element will be completely different

Explanation:

nuclear transmutation is the conversion of one chemical element into another chemical element.

through isotope, the new element will be completely different

Answer: Element or Isotope

Explanation:

Transmutation of elements is the change that occurs when one chemical element is transformed to another, this happens during nuclear reaction or during radioactive decay.

When this happens, a different element or isotope is formed because there is a change in the proton or neutron within the nucleus of such element.