Respuesta:
Atomic Mass Name chemical element number
63.546 Copper 29
65.39 Zinc 30
69.723 Gallium 31
72.64 Germanium 32
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Respuesta:
Atomic Mass Name chemical element number
63.546 Copper 29
65.39 Zinc 30
69.723 Gallium 31
72.64 Germanium 32