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Na is Sodium and Cl is chlorine....i have the Periodic Table of elements here rite now but im too lazy to look at it to find the number of protons, but to find the number of neutrons, you subtract the atomic number which is the number of protons from the atomic mass...i learned bout this a few days ago in grade 9 science...hope i helped.. =)

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14y ago

What else can I help you with?