Question

In α decay producing 228Ra, the parent nuclide is nearly 100% of the natural element and is found in gas lantern mantles and in metal alloys used in jets. What is the parent nuclide?

a) 238U
b) 232Th
c) 228Ra
d) 226Ra

Answer 1

a) 238U

The parent nuclide in α decay producing 228Ra is 228Th

Step-by-step explanation:

The parent nuclide in α decay producing 228Ra is 228Th.

Alpha decay is a type of radioactive decay in which an alpha particle (two protons and two neutrons) is emitted from the nucleus of an atom.

In this case, the parent nuclide, 228Th, undergoes α decay to produce 228Ra as the daughter nuclide. The parent nuclide, 228Th, is nearly 100% of the natural element and is found in gas lantern mantles and in metal alloys used in jets.

Therefore, the correct answer is option a) 238U