## Chemistry: A Molecular Approach (3rd Edition)

$1.83 \times 10^{3}$ electrons
Mass of 1 electron = 0.00055 amu Mass of 1 proton = 1.00866 amu So, number of electrons needed to equal mass of 1 proton = $\frac{1.00866}{.00055}$ = $1.83 \times 10^{3}$ electrons.