(a)[2]
Explain why the values in Table 10.1 are not the same as the points on the graph.
(b)[2]
Using Fig. 10.1, determine the half-life of this protactinium isotope.
(c)[3]
Write down the nuclide equation for the decay of protactinium-234.
Physics 0625 · IGCSE · Radioactivity
Radioactivity — practice question
A student positions a sample containing the isotope protactinium (Pa-234) beside a radiation detector. Detector readings, taken at $20\,\text{s}$ intervals, are shown in Table 10.1. Fig. 10.1 plots the count rate from this sample against time.