The addition of even one neutron can dramatically change an isotope’s properties. Carbon-12 is stable, meaning it never undergoes radioactive decay. Carbon-14 is unstable and undergoes radioactive decay with a half-life of about 5,730 years (meaning that half of the material will be gone a...
There is a whole group of elements that were made in a lab, including bohrium. This lesson describes how bohrium was made, named, and then discusses properties of this mysterious element. Related to this Question What is the chemical symbol for samarium?
This lesson describes the discovery of the element darmstadtium, named after the city of Darmstadt. In addition to the origin of its name, we also discuss its properties and uses. Related to this Question What is roentgenium's atomic mass?
He describes the Moon as a kind of “museum of solar system history”. “Because it has no atmosphere and has been geologically inactive for billions of years, the surface will preserve a record of everything that has hit or fallen on the Moon, including the solar wind, particles, meteorit...
"Hot" refers to high temperatures or intense emotions, while "heavy" describes significant weight, bulk, or emotional intensity.
An isotope of an element has the same number of protons but a different number of neutrons. thermofisher.com/xrf Did you know? The periodic table was created in 1869 by Dmitry I. Mendeleev. 7 List of periodic table elements 1 Hydrogen 2 Helium 3 Lithium 4 Beryllium 5 Boron 6 Carbon 7...
One is alpha particle decay, wherein an atom releases a helium nucleus. Beta decay involves the emission of a proton or an electron. In gamma-decay, a gamma-ray photon is emitted. These decay events are random but can be averaged using a term called "half-life". This describes the ...
Pharmacotherapy (including not only clasical chemotherapy, but also a targeted, biological therapy, and imunotherapy) as well as radiotherapy or isotope treatment chapters were particularly carefully prepared. Clinical psychopharmacotherapy [8 December 2017] Long postponed publication ...
What this means for our understanding of subatomic forces is unclear but it could suggest that deeper, unknown physics is dictating the behavior of the bizarre isotope. Because the strong force is what holds an atom together, as well as ruling their actions at these short timescales, it is th...
What is the half life of an isotope that decays to 25% of its original activity in 77.1 hours? How do you calculate effective half-life? How do you calculate the half-life of a drug? How do you calculate the half-life of a radioactive isotope?