Em tham khảo nha :
\(\begin{array}{l}
a)\\
{m_C} = 6 \times 1,6726 \times {10^{ - 27}} + 6 \times 1,6748 \times {10^{ - 27}} + 6 \times 9,1094 \times {10^{ - 31}}\\
{m_C} = 2,0098 \times {10^{ - 26}}Kg\\
b)\\
{m_e} = 6 \times 9,1094 \times {10^{ - 31}} = 5,46564 \times {10^{ - 30}}kg\\
d = \dfrac{{{m_e}}}{{{m_C}}} = \dfrac{{5,46564 \times {{10}^{ - 30}}}}{{2,0098 \times {{10}^{ - 26}}}} \approx 0
\end{array}\)
