Stable isotopes do not decay into other elements. In contrast, radioactive isotopes (e.g., 14C) are unstable and will decay into other elements. The less abundant stable isotope(s) of an element have ...

Certain isotopes are unstable and undergo a process of radioactive decay, slowly and steadily transforming, molecule by molecule, into a different isotope. This rate of decay is constant for a ...

Electron shells are mentioned. Two extra neutrons are added to make an unstable isotope which explodes at the end. This clip could be used to illustrate and introduce the concept of isotopes as an ...

Electron shells are mentioned. Two extra neutrons are added to make an unstable isotope which explodes at the end. This clip could be used to illustrate and introduce the concept of isotopes as an ...

A radioactive isotope's nucleus is unstable and spontaneously decays, giving off radiation and changing into a different isotope. The rate at which nuclei decay is constant. Half-life describes ...