Definify.com

Definition 2025

mass_number

mass number

English

Noun

mass number ‎(plural mass numbers)

(physics) The total number of protons and neutrons in an atomic nucleus.

Related terms

Translations

number of protons and neutrons in an atomic nucleus

Italian: numero di massa m
Russian: массовое число́ n ‎(massovoje čisló)
Swedish: masstal n

Vietnamese: số khối (vi)