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Heyy can I get with this please?!
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Aug 22, 2019
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Heyy can I get with this please?!
Biology
high-school
Asenovm
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19 Protons
20 Neutrons
Atomic Mass is 39
2 in the first shell
8 in the third shell
Trond Kristiansen
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Aug 27, 2019
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Trond Kristiansen
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