Explain what makes an isotope radioactive. Why do radioactive isotopes undergo radioactive decay? How does the energy released by nuclear reactions compare to that released by ordinary chemical reactions? Why? Write the nuclear equation for the depicted process. Tri...
What is an unstable radioactive isotope? Is rust a synthesis reaction? What is electrolysis in chemistry? In an isotope, which part of an atom changes? What are redox half reactions? What element has all radioactive isotopes? What is H2SO4 in chemistry?
A proton has a mass approximately 1836 times that of an electron. The large mass of the proton contributes to the mass of atomic nuclei. 6 Positron A positron is unstable and annihilates upon contact with an electron. When a positron encounters an electron, both particles are annihilated, rele...
835 times more massive than an electron. Atoms always have an equal number of protons and electrons, and the number of protons and neutrons is usually the same as well. Adding a proton to an atom makes a new element, while adding a neutron makes an isotope, or heavier version, of that...
Carbon-14 is more unstable than carbon-12, so it's radioactive: it naturally disintegrates, giving off subatomic particles in the process, to turn itself into nitrogen. Carbon-12 and carbon-14 are called isotopes of carbon. An isotope is simply an atom with a different number of neutrons ...
Due to its short half-life, Uub is extremely unstable and decays quickly into lighter elements. Its half-life is around 290 milliseconds, which means that half of its atoms will decay in that time. This makes it difficult to study Uub and its properties. Applications of Uub Uub has no pr...
The r-process begins when the seed nuclei of iron are bombarded with these free neutrons, soaking them up. Stableatomsof iron, such as the isotope iron-56, have 26 protons and 30 neutrons. The excess of neutrons granted to iron by neutron capture makes the iron atoms unstable and radioact...
The half-life of a radioactive species is the time it takes for half of the unstable nuclei in a sample to decay into a different form. This number can go very high, into the billions of years, although for carbon-14 it is about 5,730 years (a blip in geological time, if not in...
Radioactivity is the disintegration of an unstable atom's nucleus into a more stable energy-wise nucleus. This process occurs spontaneously and... Learn more about this topic: Radioactivity | Definition, Types & Uses from Chapter 18/ Lesson 7 ...
A half-life is the amount of time it takes for have the atoms in a sample of an unstable isotope to undergo radioactive decay. Each half-life cycle another 50 percent of the original isotope is lost, meaning that the sample continues to dwindle but never fully disappears. ...