Radioactive decay occurs so that nuclei can gain greater stability. Things that were never alive or are more than ~70,000 years old have to be dated by analyzing for other isotopes or isoptopic ratios.
Alpha or beta particles or gamma rays are emitted so that the resulting nuclei have greater binding energy per nucleon, which means greater stablility. The scientists used carbon dating and decided that the mummy was 10,000 years old. Carbon dating is not perfect, but it can give you a rough idea. I started to explain carbon dating in more detail, but I...
It cannot be used to date rocks, both because of its short half life (about 5,000 years), and because it can only be used to date the remains of living things (such as bones, or wood). No, carbon dating is the amount of an isotope of carbon in a fossil, Carbon 14.
There is a change in mass, since an electron and an electron anti-neutrino is emitted, and also because the neutron changes into a proton, but the atomic mass number , per se, does..main types are alpha decay in which an alpha particle (made of 2 protons and 2 neutrons) is emitted, beta decay (the emission of a beta particle such as an electron), and gamma decay in which a high-energy gamma photon is emitted Everything has what is called a half-life, it is the time in which a substance, such as carbon halves in quantity.All life forms have a set ratio of carbon to other substances in their bodies and by seeing how much this carbon has depleted they can see how many years have gone by since death (the...Answer 1 Radioisotopes The major element in anything living or dead is Carbon, C.this usually happens with large nuclei, which tend to be more unstable (radioactive) than smaller nuclei."The radioactive decay of any atom is associated with theemission of a charged particle (alpha or positive or negative beta)from or the capture of an electron by the nucleus." Nucleonics Fundamentals by David B. Radioactive decay is the spontaneous change or disintegration of anunstable atomic nucleus as it transforms itself to lose energy.Itdoes this by the release of either particulate radiation orelectromagnetic radiation, or both.