The sum of the numbers of protons

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Problem

The sum of the numbers of protons, electrons, and neutrons in

12\text{ g}

^{12}_{6}\mathrm{C}

is (1) 1.8 (2)

12.044\times10^{23}

(3)

1.084\times10^{25}

(4)

10.84\times10^{23}