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Let's do the math.

There are currently about 120 known chemical elements. On average, each element has around three isotopes (where the nucleus has the same number of protons, but a different number of neutrons).

So a quick and dirty number would be that there are around 300-350 unique atomic nuclei. Or possibly twice that, if you consider the antimatter versions of each.

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9y ago

What else can I help you with?