Question 8

${}_{\text{87}}{}^{\text{205}}\text{F}\text{r}\stackrel{}{⟶}{}_{\text{2}}{}^{\text{4}}\text{H}\text{e}\text{<mo>+</mo>}{}_{\text{85}}{}^{\text{201}}\text{A}\text{t}$

${\text{CH}}_{\text{4}}\text{<mo>+</mo>}2{\text{O}}_{\text{2}}\stackrel{}{⟶}{\text{CO}}_{\text{2}}\text{<mo>+</mo>}\text{2}{\text{H}}_{\text{2}}\text{O}$

$\text{Cu}\stackrel{}{⟶}{\text{Cu}}^{\text{2<mo>+</mo>}}+\text{2}e$

${}_{\text{9}}{}^{\text{18}}\text{F}\stackrel{}{⟶}{}_{\text{1}}{}^{\text{0}}\text{e}\text{<mo>+</mo>}{}_{\text{8}}{}^{\text{18}}\text{O}$