# A radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. What was the identity of the original nucleus? Show the nuclear equation that leads you to this answer.

Aug 21, 2017

#### Answer:

$A {l}_{13}^{28}$

#### Explanation:

$A {l}_{13}^{28} = = = N {a}_{11}^{24} + H {e}_{2}^{4}$

The most stable isotope of Aluminum has a mass of 27 so Al with a mass of 28 is unstable.