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which atom has 6 protons
which atom has 7 protons
which atom has 5 protons
which atom has 16 protons
which atom has 8 protons
which atom has 16 protons and 18 electrons
which atom has 9 protons
which atom has 4 protons
which atom has 4 protons and 4 neutrons
which atom has 4 protons 4 neutrons
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