Question

${}_7{N}^{14}{+}_{2}H{e}^4\to$ X+${}_1{H}^1$ ; X is

• A. ${}_9{F}^{18}$
• B. ${}_{10}N{e}^{18}$
• C. ${}_8{O}^{17}$
• D. ${}_6{C}^{15}$

Answer 1

The correct option is C ${}_8{O}^{17}$

${}_7{N}^{14}{+}_{2}H{e}^4{\to }_Z^{A}X{+}_1{H}^1$

Change balance: $7+2=Z+1$
$Z=8$
Mass balance: $14+4=A+1$
$A=17$