what is the role of mass number in radiation therapy?

It allows us to be able to tell the difference between elements with a different number of neutrons, called isotopes. The mass number is also related to the ... Mar 20, 2025 ... The mass number is defined as the total number of protons and neutrons in an atom. It can be calculated by adding the number of neutrons and the number of ... Apr 30, 2020 ... The mass number of an atom is equal to the total number of protons and neutrons collectively called nucleons in the nucleus of an atom. Upvote ·. Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how ... ATOMIC MASS NUMBER (A) - A number equal to the number of nucleons (neutrons plus protons) within the nucleus of an atom. ATOMIC MASS UNIT (amu) - The atomic ... The mole allows scientists to calculate the number of elementary entities (usually atoms or molecules ) in a certain mass of a given substance. Avogadro's ... Most of the ions formed in a mass spectrometer have a single charge, so the m/z value is equivalent to mass itself. ... even-number mass. even-electron ions odd- ... May 16, 2018 ... The mass number is the sum of protons and neutrons. The atomic mass is the weighted average of the masses of individual elements weighted by abundance. Specifically, the atomic number corresponds to the number of protons found in the nucleus of an atom. Since each element on the periodic table has a unique ... (with respect to a sphere of equal volume) due to thermal shape fluctuations ... tion of the NFDM for the abundance nA of fragments of mass number A,. nA ...