calcium-45 en · NOUN
Meanings
- (uncountable) A radioactive isotope of calcium, 4520Ca, with 20 protons and 25 neutrons, and a half-life of 162.6 days; it is used as a tracer in studying calcium metabolism. As it decays it undergoes nuclear transmutation via electron emission, also called negative beta decay (β⁻-decay), into scandium.
Relateds
calcium-42 · calcium-48 · calcium-44 · calcium-40 · calcium-46 · calcium-43