'''Electron capture''' is a [[radioactive decay]] process in which an orbital [[electron]] is captured by and merges with the [[nucleus]]. The [[mass number]] is unchanged, but the [[atomic number]] is decreased by one. | '''Electron capture''' is a [[radioactive decay]] process in which an orbital [[electron]] is captured by and merges with the [[nucleus]]. The [[mass number]] is unchanged, but the [[atomic number]] is decreased by one. |