\binom{238}{92} U \to \binom{234}{90} T h + \binom{4}{2} α

${{238 \atop 92} U \rightarrow {234 \atop 90} Th + {4 \atop 2} \alpha}$

\binom{238}{92} U \to \binom{234}{90} T h + \binom{4}{2} α

${238 \atop 92} U \rightarrow {234 \atop 90} Th + {4 \atop 2} \alpha$

\binom{}{}

$\atop$