A Geiger counter is used to measure the activity of a sample of iodine-131. Based on the data, what is the half-life of iodine-131?
A. 16 days
B. 8 days
C. 4 days
D. 12 days
8 days. Just took the quiz
To determine the half-life of iodine-131, we need data from the Geiger counter. Unfortunately, the information regarding the data is missing. Without the data, we cannot calculate the half-life. Could you provide the data from the Geiger counter?
To determine the half-life of iodine-131 based on the data obtained from a Geiger counter, you would need information about the decay rate over a period of time. The decay rate is a measure of how quickly the radioactive substance is decreasing in activity.
To find the half-life, you would typically measure the count rate of the sample at various time intervals and plot a graph of the count rate versus time. The count rate represents the number of radioactive particles being emitted by the sample per unit of time.
By observing the graph, you would notice that the count rate decreases exponentially over time. The half-life corresponds to the time it takes for the count rate to decrease by half. So, you would look for the point on the graph where the count rate is approximately half of its initial value.
Unfortunately, the data or graph is not provided in your question. Without this information, it is not possible to determine the half-life of iodine-131.