Atomic structure
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1. All elements are composed of.................
molecules
2. How many electrons are in an atom of carbon (C)? (Remember : Atomic Number = no. of Protons or no. of Electrons)
6
3- How many neutrons are in an atom of sodium (Na)? (Remember : Neutrons no. = Mass no. - Atomic no. )
23 - 11 = 12
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