The decay constant of the end product of a radioactive series is

The end product of radioactive decays is

What is the end product of natural radioactive series?

The decay constant of a radioactive sample

The decay constant of a radioactive sample

Bismuth is the end product of the radioactive disintegration series known as:

The decay constant lambda of the radioactive sample is probaility of decay of an atom in unit time, then

There are four radioactive decay series called thorium (4n) , uranium (4n + 2) actinium (4n + 3) and neptunium (4n + 1) series. Neptunium series is artificial while other three series are natural. The end productsd of each radioacitve decay series have stable nuclei. All natural decay series terminate at lead but neptunium or artificial series terminate at bismuth. The end products of uranium and actinium series are, respectively