P. 4002. The starting isotope of a decay chain is ²³⁸U and the stable final isotope of this decay chain is ²⁰⁶Pb. How many decays, and how many decays occur in the decay chain?

(3 points)

Deadline expired.

Statistics on problem P. 4002. 128 students sent a solution. 3 points: 99 students. 2 points: 9 students. 1 point: 14 students. 0 point: 3 students. Unfair, not evaluated: 3 solutions.