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22 October, 14:19

Is an atom with a nucleus of 31 protons and 31 neutrons a stable isotope?

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  1. 22 October, 14:40
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    No. Since the atom has 31 protons, that means it's an isotope of gallium. Looking up gallium, you can determine that in nature it's composed of the two stable isotopes, gallium-69 and gallium-71, which have 38 and 40 neutrons respectively. Looking further, you will find that gallium-62 has a half life of 116.18 milliseconds which means it's quite unstable.
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