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- What makes a nucleus unstable? Which atoms tend to be unstable? (1Dint)

- What makes a nucleus unstable? Which atoms tend to be unstable? (1Dint)
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- What makes a nucleus unstable? Which atoms tend to be unstable? (1Dint)

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User Eero
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1 Answer

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A nucleus is unstable when the forces among the particles that make it up are unbalanced. This make the nucleus have an excess of internal energy.

All elements with Z>83 are unstable and radioactive.

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User Dithermaster
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