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Chemistry, 18.10.2021 07:10 lilbanks4

: Cho biết số đơn vị điện tích hạt nhân, số proton, số notron và số electron của 40
20
Ca;
54
26
Fe

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: Cho biết số đơn vị điện tích hạt nhân, số proton, số notron và số electron của 40
20
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