Bài 2 trang 14 SGK Hóa học 10 Nâng cao

\(\eqalign{
& a)\,\,\,\,\,_{14}^{28}Si \cr
& \,\,\,\,\,\,\,\,\,_{14}^{29}Si \cr
& \,\,\,\,\,\,\,\,\,_{14}^{30}Si \cr} \)

\(\eqalign{
& 14 \cr
& 14 \cr
& 14 \cr} \)

\(\eqalign{
& 14 \cr
& 15 \cr
& 16 \cr} \)

\(\eqalign{
& 14 \cr
& 14 \cr
& 14 \cr} \)

\(\eqalign{
& b)\,\,\,\,_{26}^{54}Fe \cr
& \,\,\,\,\,\,\,\,_{26}^{56}Fe \cr
& \,\,\,\,\,\,\,\,_{16}^{57}Fe \cr
& \,\,\,\,\,\,\,\,_{26}^{58}Fe \cr} \)

\(\eqalign{
& 26 \cr
& 26 \cr
& 26 \cr
& 26 \cr} \)

\(\eqalign{
& 28 \cr
& 30 \cr
& 31 \cr
& 32 \cr} \)