The mass number contributes to an atom’s stability, with isotopes having different mass numbers due to varying numbers of neutrons. Some isotopes may be more stable than others, depending on the balance between protons and neutrons in the nucleus.
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The mass number, the sum of protons and neutrons in an atom’s nucleus, influences its stability. Stable isotopes have balanced proton-neutron ratios, enhancing nuclear stability. Deviations from this balance can lead to unstable isotopes, prone to radioactive decay in an attempt to achieve a more stable configuration.