Same mass, atomic number one lower - Cs - caesium
The decay product ratio is the ratio of the amount of a specific decay product to the amount of the parent isotope in a radioactive decay chain. It is used to determine the relative contribution of different decay pathways in the decay of a radioactive substance.
The decay of radioactive elements in the Earth's crust, particularly uranium, thorium, and potassium, generates geothermal energy. This decay produces heat that warms the surrounding rock and water, leading to the formation of geothermal reservoirs that can be harnessed for energy production.
Phosphorus-32 is the radioactive isotope that undergoes beta decay to produce sulfur-32. During beta decay, a neutron in the nucleus of phosphorus-32 is converted into a proton and an electron, resulting in the formation of sulfur-32.
A radioactive element that undergoes nuclear decay to transform into a different element is called a parent isotope. The decay process involves the emission of particles and/or energy until the parent isotope reaches a stable form, known as the daughter isotope. This decay process is used in radiometric dating to determine the age of rocks and minerals.
This could turn into a very, complicated long answer. I'll just contribute a bit and others can supplement it. Volcanoes themselves tend not to be dated. The rocks they produce are dated by radioisotope dating. Volcanoes produce chemically characteristic types of rock/ash so we can usually tell which volcano a particular rock or ash layer came from. These rocks can be radioisotope dated which gives us an indication of the age of a volcano. Some elements are radioactive; they decay and so are considered unstable. These elements tend to be big and so the nucleus doesn't hold together as well as smaller elements. This happens at a fixed rate, called its half-life. The original atom (called the parent isotope) decays into new elements (the daughter isotope(s)). We can calculate the rate of decay and therefore we can calculate a ratio between parent and daughter isotopes which in turns gives us an indication of how old it is. One of the best known decay series is that of uranium 238 which eventually decays to lead 206. In a liquid state, these daughter isotopes can often escape. However, when lava freezes and becomes solid rock, they can't.
Cesium-137
Sodium-22
Bismuth-214
Iodine-131 is a decaying radioisotope that produces xenon-131 through beta decay. During beta decay, a neutron is transformed into a proton within the nucleus, and a beta particle (an electron) is emitted, resulting in the production of xenon-131.
A PET scan uses radioisotope decay by detecting the pair of annihilation photons emitted during the decay process.
How long it takes for half of a sample to decay to another form.
The half-life of a radioisotope is the time it takes for half of the radioactive nuclei in a sample to decay. It is a characteristic property of each radioisotope and determines the rate at which the isotopes decay.
The rate of decay for a radioactive sample
The rate of decay for a radioactive sample
radiating to kill cancer cells
It is an example of radioactive decay.
The length of time required for half of a sample of radioactive material to decay