The daughter nuclide when Ni-78 undergoes beta decay - option D. Ni-78 as beta decay cause a change in atomic number only.
Beta decay is the radioactive decay that emits a beta particle from an atomic nucleus. This causes not just beta particle but some gamma radiation as well. It is represented by [tex]\beta ^{-}[/tex] and notation is ₋₁β⁰
Thus, the correct answer would be: option D. Ni-78 as beta decay cause a change in atomic number only.
Learn more about beta decay:
https://brainly.com/question/12448836