Definition:Radium/226
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Isotope of Radium
Radium-$226$ is the isotope of radium which has $138$ neutrons in addition to its $88$ protons.
Ra-$226$ is radioactive, with a half-life of approximately $1600$ years.
It has the longest half-life of all the isotopes of radium.
Sources
- 1963: Morris Tenenbaum and Harry Pollard: Ordinary Differential Equations ... (previous) ... (next): Chapter $1$: Basic Concepts: Lesson $1$: How Differential Equations Originate: Exercise $1.2$