This page is shared under a CK-12 license and was authored, remixed, and/or curated by Melissa Alviar-Agnew, Henry Agnew, and Lance S. Element Symbol Atomic Number Mass Number Protons Neutrons Electrons Carbon 6 12 O 8 8 Potassium 19 20 Au Tin Sn 50 69 Zinc 64 30 Cobalt Co 27 32 Boron 5 6.
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