Determine the identity of the daughter nuclide from the alpha decay of ${ } _ { 90 } ^ { 228 } $ Th.

Question

Quizplus · Accepted Answer

In alpha decay, an alpha particle ($^{4}_{2}$He) is emitted from the nucleus, causing it to lose two protons and two neutrons. In this case, the parent nuclide is ${ } _ { 90 } ^ { 228 } $ Th, which has 90 protons and 138 neutrons. After the alpha decay, the daughter nuclide will have 88 protons and 136 neutrons, which corresponds to ${ } _ { 88 } ^ { 224 } $ Ra. Therefore, the correct answer is choice C.

Determine the Identity of the Daughter Nuclide from the Alpha 90228{ } _ { 90 } ^ { 228 } 90228​

Determine the Identity of the Daughter Nuclide from the Alpha ${ } _ { 90 } ^ { 228 }$