Em tham khảo nha:
\(\begin{array}{l}
^{12}{C^{16}}{O^{16}}O:44g/mol\\
^{12}{C^{17}}{O^{17}}O:46g/mol\\
^{12}{C^{18}}{O^{18}}O:48g/mol\\
^{12}{C^{16}}{O^{17}}O:45g/mol\\
^{12}{C^{16}}{O^{18}}O:46g/mol\\
^{12}{C^{17}}{O^{18}}O:47g/mol\\
^{13}{C^{16}}{O^{16}}O:45g/mol\\
^{13}{C^{17}}{O^{17}}O:47g/mol\\
^{13}{C^{18}}{O^{18}}O:49g/mol\\
^{13}{C^{16}}{O^{17}}O:46g/mol\\
^{13}{C^{16}}{O^{18}}O:47g/mol\\
^{13}{C^{17}}{O^{18}}O:48g/mol
\end{array}\)