The daughter nuclide is the atom or atoms that result when a parent nuclide decays through emission of ionizing radiation or through fission.
parent nuclide daughter nuclide + energy
parent nuclide daughter nuclide + energy
Mass number of the parent nucleus will be reduced by 4
It's called Radioactive Decay. It transforms the atom (or "parent nuclide") into a "daughter nuclide"http://en.wikipedia.org/wiki/Radioactive_decay
If there are 17 daughter nuclides, then this represents 17 half-lives. Each half-life corresponds to a 50% reduction in the parent nuclide. Therefore, 17 half-lives would result in 1/2^17 (0.0000763) or approximately 0.00763% of the original parent nuclide remaining in the sample.
The mass number decrease with 4.
When a parent nuclide emits an alpha particle, which consists of 2 protons and 2 neutrons, the mass number (A) of the nuclide decreases by 4, as it loses a total of 4 nucleons. The atomic number (Z) decreases by 2 because the emission of 2 protons reduces the number of protons in the nucleus. As a result, the parent nuclide transforms into a different element that is two positions to the left on the periodic table.
The daughter isotope is the result of the radioactive disintegration of the parent isotope. For example radium is a product of the uranium disintegration.The two isotopes have different chemical (different atomic numbers, etc.), physical and nuclear properties.
Decay Series
A configuration composed of Photons & Neutrons is called Nuclide's. There are 3000 nuclide's approximately all together (270 nuclide's are naturally forms)
Commonly the parent nuclide decays by the beta emission. In addition to that; inside the nuclei decay chain will consistently have half-lives!