1．
有下列符号：\(\rm{{\,\!}^{35}}\)
\(\rm{Cl}\)和\(\rm{{\,\!}^{37}}\)
\(\rm{Cl}\)、\(\rm{O}\)\(\rm{{\,\!}_{2}}\)
和\(\rm{O}\)\(\rm{{\,\!}_{3}}\)
、\(\rm{{\,\!}^{1}}\)
\(\rm{H}\)\(\rm{\rlap{_{2}}{^{16}}}\)
\(\rm{O}\)和\(\rm{{\,\!}^{2}}\)
\(\rm{H}\)\(\rm{\rlap{_{2}}{^{18}}}\)
\(\rm{O}\)。下列有关说法正确的是\(\rm{(}\) \(\rm{)}\)