File:Primordial nucleosynthesis2.png

${\displaystyle {\begin{array}{ll}{\ce {n^{0}->{p+}+{e^{-}}+{\overline {\nu }}_{e}}}&{\ce {{p+}+n^{0}->{^{2}_{1}D}+\gamma }}\\{\ce {{^{2}_{1}D}+p+->{^{3}_{2}He}+\gamma }}&{\ce {{^{2}_{1}D}+{^{2}_{1}D}->{^{3}_{2}He}+n^{0}}}\\{\ce {{^{2}_{1}D}+{^{2}_{1}D}->{^{3}_{1}T}+p+}}&{\ce {{^{3}_{1}T}+{^{2}_{1}D}->{^{4}_{2}He}+n^{0}}}\\{\ce {{^{3}_{1}T}+{^{4}_{2}He}->{^{7}_{3}Li}+\gamma }}&{\ce {{^{3}_{2}He}+n^{0}->{^{3}_{1}T}+p+}}\\{\ce {{^{3}_{2}He}+{^{2}_{1}D}->{^{4}_{2}He}+p+}}&{\ce {{^{3}_{2}He}+{^{4}_{2}He}->{^{7}_{4}Be}+\gamma }}\\{\ce {{^{7}_{3}Li}+p+->{^{4}_{2}He}+{^{4}_{2}He}}}&{\ce {{^{7}_{4}Be}+n^{0}->{^{7}_{3}Li}+p+}}\end{array}}}$

In your article, replace the image with:

<math chem>\begin{array}{ll}
\ce{n^0 -> {p+} + {e^-} + \overline\nu_e} & \ce{ {p+} + n^0 -> {^2_1D} + \gamma}\\
\ce{ {^2_1D} + p+ -> {^3_2He} + \gamma} & \ce{ {^2_1D} + {^2_1D} -> {^3_2He} + n^0}\\
\ce{ {^2_1D} + {^2_1D} -> {^3_1T} + p+} & \ce{ {^3_1T} + {^2_1D} -> {^4_2He} + n^0}\\
\ce{ {^3_1T} + {^4_2He} -> {^7_3Li} + \gamma} & \ce{ {^3_2He} + n^0 -> {^3_1T} + p+}\\
\ce{ {^3_2He} + {^2_1D} -> {^4_2He} + p+} & \ce{ {^3_2He} + {^4_2He} -> {^7_4Be} + \gamma}\\
\ce{ {^7_3Li} + p+ -> {^4_2He} + {^4_2He} } & \ce{ {^7_4Be} + n^0 -> {^7_3Li} + p+}
\end{array}</math>