As the name suggests, stable isotopes are characterized by stability and no radioactivity. Stable isotopes of elements have similar physicochemical properties and different intranuclear properties. Compared with radioisotopes, stable isotopes have the following characteristics: excellent sensitivity, high measurem...
Stable Isotope Chi Part 1 Fall 2010 • What are stable isotopes and why are theyHart, Stephen C
it means that the region has been really hot for a really long time. "There is no question that the results are fascinating," said Harvard anthropologist(人类学家), Daniel Lieberman, who studies how and why the human body looks the way it does. For one thing, at some point we developed...
Radioactive decay is the process of an atom's nucleus breaking down due to an unstable state in an effort to transform into a more stable isotope. Only some isotopes are unstable while others are stable and never need to undergo decay. ...
The nucleus of Ni(Z = 28) is actually more stable than Fe(Z = 26). Suggest a reason for this. Why are some ionic compounds insoluble? Why does CrO3 in acidic water oxidize? Give two reasons why F_2 is the most reactive of the halogens. Why is benzene less reactive 1,3,5-cyclo...
And yet stable isotopes are abundant up to A = 208. The conventional explanation for the end of nuclear sta- bility at 28028Pb – which is that the stable balance between the Yukawa attraction and the Coulomb repulsion saturates at A = 208 – is actually difficult to regard as a serious...
It's easy to construct an argument as to why, if you're looking for an element with no stable isotopes, Tc is a good candidate. Any even atomic number is guaranteed to have an even-even isotope that's stable against beta decay, because even-even isotopes are more stable than odd-odd...
Standard uniformitarian models generally use average observed coral growth rates to extrapolate large spans of time. Based on today’s slow growth rates in certain stable environments, some have posited that the Great Barrier Reef, for example, began forming over half a million years ago. ...
Are protons fixed? The number of protons in the nucleus of an atom determines what element it is, sothe number of protons is fixed. But, the number of neutrons can vary. Nuclei with the same number of protons but different numbers of neutrons are called isotopes. ... Chemical properties ...
As you may know, atomic elements can have different isotopes, which are different versions of an element that have the same number of protons, but different numbers of neutrons contained within the nucleus. Thus, the atomic mass of these isotopes will be different, as will some of their phys...