In other words, it's the sum of the number of nucleons in an atom. Relative Atomic Mass The ratio of the average mass per atom of an isotope to 1/12 the mass of a carbon-12 atom. Relative atomic mass is also known as atomic weight (symbol: Ar). Notes (Kr) Standard Atomic ...
There are two reasons for the difference between mass number and isotopic mass, known as themass defect: Theneutron isslightlyheavierthan theproton. This increases the mass of nuclei with more neutrons than protons relative to the atomic mass unit scale based on12C with equal numbers of protons ...
An elements reactivity is highly dependent on its natural stability created by the number of protons, neutrons, and electrons in each atom.Answer and Explanation: The element krypton is classified as one of the noble gases, also known as inert gases. This means that it rarely reacts with any...
(a) Krypton has more protons than potassium. (b) There are more positive charges in the krypton nucleus, so the attractive charge of the electron is stronger, and the electrons are drawn closer to What will be the radius...