JEE MAIN - Chemistry (2006 - No. 35)
In the transformation of $${}_{92}^{238}U$$ to $${}_{92}^{234}U$$, if one emission is an α-particle, what should be the other
emission(s)?
Two $$\beta^-$$
Two $$\beta^-$$ and one $$\beta^+$$
One $$\beta^-$$ and one $$\gamma$$
One $$\beta^+$$ and One $$\beta^-$$
Vysvětlení
$${}_{92}^{238}U\buildrel { - \alpha } \over
\longrightarrow {}_{90}^{234}Th\buildrel {\, - 2\beta } \over
\longrightarrow {}_{92}^{234}U$$