How would you compare nuclear fusion, fission, and radioactive …
2016年2月15日 · nuclear fusion is a nuclear reaction in which two or more atomic nuclei come very close and then collide at a very high speed and join to form a new nucleus. 2.nuclear fission is a process in which the nucleus of an atom splits into smaller parts (lighter nuclei). The fission process often produces free neutrons and gamma photons, and releases a very large amount …
Why does carbon 14 undergo radioactive decay? - Socratic
2015年5月29日 · Carbon-14 is radioactive because it has too many neutrons for the number of protons. > The principal factor that determines whether a nucleus is stable is the neutron to proton (n:p) ratio. The diagram below plots the number of neutrons versus the number of protons in the first 15 elements. The black squares represent stable isotopes. They are called the band of …
What is radioactive decay? + Example - Socratic
2015年10月17日 · During radioactive decay, particles and energy called radiation are are released by atoms of the radioactive element. Radioactive decay is the term used to describe the process by which an unstable atom loses energy to its surrounding environment. With radioactive decay, the nucleus of the atom changes from a parent nuclide to a daughter ...
What happens to an atom that experiences radioactive decay?
2016年4月16日 · Radioactive decay is when the nucleus of an atom isn't stable - it could have too many protons that push each other apart, or too many neutrons, and it's just like a big lump of rock and can fall apart. There are three kinds of radioactive decay, all named after Greek letters: alpha (#alpha#), beta (#beta#) and gamma (#gamma#).
Radioactive decay of ""^40K atoms in an igneous rock has
2017年5月31日 · If a radioactive Isotope has a half life of 30 days then how long will it take 1000 grams to... If the half life of an unstable element is 5000 years, what percentage of the parent material... How much material will be left if a radioactive isotope has a …
Alpha Decay - Chemistry - Socratic
The best known everyday application of alpha decay is the smoke detector. A smoke detector consists of two metal plates with a small space between them. These plates have wires connected to a battery and current monitor. One of the plates contains a small amount of the radioactive element americium, which gives off alpha particles.
What happens in the process of radioactive decay? - Socratic
2017年11月29日 · When an unstable isotope undergoes radioactive decay radiation is emitted in the form of either alpha, beta, or gamma particles. When an unstable isotope undergoes radioactive decay radiation is emitted in the form of either alpha, beta, or gamma particles. Alpha or beta emissions may result in a change in the number of protons within the nucleus. A …
Why are some isotopes radioactive and others are not?
2018年5月22日 · Uranium 235 is very unstable and used in atomic bombs. with a ratio of 92 protons to 143 neutrons. The ratio of protons to neutrons is critical to the stability of the atomic nucleus. All atom will undergo radioactive decay at some point. In atoms with an unstable ratio of protons and neutrons this decay will occur at an observable and ...
How is radioactive decay related to half life? - Socratic
2016年4月5日 · The faster the decay, the shorter the half life. Half life (mathematically T_(1/2)) is how long it takes for half of the atoms in a substance to radioactively decay. If you want to know the maths behind their relationship, N = N_0e^(-lambdat) applies to radioactive substances, where N is the number of radioactive atoms at time t N_0 is the number of radioactive atoms at the …
How does nuclear decay affect the atomic number and mass …
2014年9月29日 · Nuclear decay changes the number of protons in the nucleus of an atom, and in doing so changes the element. For example, the alpha decay of uranium-235 changes both the mass number and the atomic number of the element from 235 to 231 and from 92 to 90. The mass number decreases by 4, and the atomic number decreases by 2. This gives rise to the …