lismary07
lismary07
16-04-2016
Chemistry
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an atom of lithium 7 has an equal number of
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Аноним
Аноним
16-04-2016
Lithium 7 has an equal number of protons and neutrons.
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Amphitrite1040
Amphitrite1040
16-04-2016
Electrons and protons
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