Schedule of Prenatal Care. Specific schedules of prenatal care vary from provider to provider, but a general schedule follows below, as well as some of the screening tests or activities you might expect at various visits.
radioisotope. a radioactive form of an element, consisting of atoms with unstable nuclei, which undergo radioactive decay to stable forms, emitting characteristic alpha, beta, or gamma radiation. These may occur naturally, as in the cases of radium and uranium, or may be created artificially.
If an isotope has an unstable nucleus that breaks down to emit radiation, then these are what we call radioactive isotopes, also known as radioisotopes. Radioactive isotopes have an unstable nucleus that decays or emits excess energy or radiation until the nucleus becomes stable.They can be naturally occurring or artificial isotopes of an element.here are over 1,000 known radioactive isotopes of elements in the periodic table. There are many applications of radioactive isotopes in various fields. In this lesson, we will learn all about radioactive isotopes and their uses.