Engineering, 05.05.2020 02:31 melly6317

The movement of electrons from one atom to another

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Engineering, 04.07.2019 18:10, ijohnh14

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Engineering, 04.07.2019 18:10, oshawn108

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Engineering, 04.07.2019 18:20, CelesteN64

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The movement of electrons from one atom to another...