There is even a radioactive isotope of carbon, carbon-14. C-14 has two extra neutrons and a half-life of 5730 years.Scientists use C-14 in a process called carbon dating.
Learn about half-life and how it is used in different dating methods, such as uranium-lead dating and radiocarbon dating, in this video lesson. As we age, our hair turns gray, our skin wrinkles and our gait slows.Scientists look at half-life decay rates of radioactive isotopes to estimate when a particular atom might decay.A useful application of half-lives is radioactive dating.Alpha particles are positively charged, beta particles are negatively charged, and gamma particles have no charge.The radiations also have increasing levels of energy, first Alpha, then Beta, and finally Gamma, which is the most energetic of all these. When a radioactive nucleus changes, the remaining nucleus (and atom) is not the same as it was. The term half-life describes the time it takes for half of the atoms in a sample to change, and half to remain the same.