What is another word for mass number?
Pronunciation: [mˈas nˈʌmbə] (IPA) 
The term "mass number" refers to the total number of protons and neutrons present in the atomic nucleus of an element. It is also known as the "nucleon number" or "atomic mass number". Some synonyms for the term "mass number" include the "isotopic mass", which is the mass of an isotope relative to the mass of carbon-12, and the "neutron number", which is the number of neutrons present in the atomic nucleus. Another term sometimes used is "nuclear number", which again refers to the total number of protons and neutrons in the nucleus. Regardless of the term used, the mass number is a fundamental concept in chemistry and physics as it helps define the properties and behavior of atoms.
