Researchers discovered rutherfordium-252, the shortest-lived superheavy nucleus, refining the "island of stability" map and ...

In 1902 Ernest Rutherford and Frederick Soddy discovered that radioactive elements, such as uranium ... rate at which uranium breaks down (its half-life), he could use the proportion of lead ...

Some natural elements are unstable. Therefore ... The time that it takes for half the radionuclides to disintegrate or decay is called half-life. This differs for each radioelement, ranging from ...

Look at this point on the graph in relation to the y-axis. You will see that the counts per minute have halved in two days. This means that it has a half-life of two days.