All known elements in nature - or most of them at any rate - have more than one isotopes.
Which isotope of which element? The answer depends entirely on those details.
The number of neutrons varies with element and isotope. Hydrogen found in nature has 0, 1, or 2 neutrons. Uranium can have from 141 to 146.
To calculate the atomic weight of an element with multiple isotopes, you multiply the mass of each isotope by its relative abundance (as a decimal), then sum the products. The result is the atomic weight of the element, which is a weighted average of the masses of its isotopes based on their abundance in nature.
it depends on the element and isotope
nm
This is 100% dependant on the element and the isotope of the element. Not every nucleus is the same.
Number of neutrons = Mass number of an isotope - 93The most common isotope has 144 neutrons.
Each isotope of an element has a different number of neutrons.
An isotope is a form is a form of an element it is determined by how many neutrons that form has
For each isotope the number of neutrons is different. Number of neutrons = Mass number of an Pm isotope - 61
For each Es isotope the number of neutrons is different.Number of neutrons = Mass number of an Es isotope - 99
Thorium (Th) has 90 protons.