Uranium doesn't decay into a single element. It undergoes a series of radioactive decays, ultimately transforming into lead (Pb).

Here's a simplified explanation of the process:

* Uranium-238 (the most common isotope) decays through a series of alpha and beta decays.

* Each decay step involves the emission of alpha particles (helium nuclei) or beta particles (electrons or positrons), changing the atomic number and mass of the element.

* The decay chain goes through various intermediate elements like thorium (Th), protactinium (Pa), radium (Ra), radon (Rn), polonium (Po), and bismuth (Bi).

* Finally, after a series of decays, the unstable isotopes transform into stable lead-206.

This entire process is called the uranium-238 decay chain.

It's important to note that:

* There are other isotopes of uranium (like uranium-235) that also undergo radioactive decay, but their decay chains are slightly different, leading to different stable isotopes of lead.

* The time it takes for uranium to decay into lead is extremely long. The half-life of uranium-238 is 4.468 billion years!

Let me know if you'd like more details about the specific decay steps in the uranium decay chain!