mass number
Example Sentences
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As an example, the masses and radii of all nuclei up to mass number 50 were calculated using this method.
From Science Daily • May 15, 2024
There is no change in mass number or atomic number during the emission of a γ ray unless the γ emission accompanies one of the other modes of decay.
From Textbooks • Feb. 14, 2019
The iodine atoms are added as anions, and each has a 1− charge and a mass number of 127.
From Textbooks • Feb. 14, 2019
Electron capture has the same effect on the nucleus as does positron emission: The atomic number is decreased by one and the mass number does not change.
From Textbooks • Feb. 14, 2019
This gives off alpha particles at such a rate that half of it has decomposed in 150 days, leaving plutonium with atomic number 94 and mass number 238.
From A Brief History of Element Discovery, Synthesis, and Analysis by Watson, Glen W.
