When The Atomic Mass Of An Element Increases What Happens To The Number Of Protons?

The number of protons remains the same.
The mass of a single element can only increase by adding neutrons. The number of protons can not change without changing the element itself.

The atomic mass is the total number of protons, neutrons and electrons in an atom. If the atomic mass. Atomic mass is the mass of an atom and when it increases the number of protons will also increase. For details, visit the following link.
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