The nuclear decay equation is [tex]_{38}^{94}Sr \rightarrow _{39}^{94}Y + e^- + \overline{\nu}[/tex]
Explanation:
First of all, we look at the periodic table to see what is the atomic number of the two elements involved.
We notice that:
This means that in the decay, a neutron from the nucleus of strontium transforms into a proton (because the atomic number, which is the number of protons, increases by 1 unit).
Therefore, this means that the decay involved is a beta-minus decay, in which a neutron converts into a proton emitting an electron (to conserve the charge) alongside an anti-neutrino.
Therefore, the balanced nuclear decay equation is:
[tex]_{38}^{94}Sr \rightarrow _{39}^{94}Y + e^- + \overline{\nu}[/tex]
where the mass number (94) does not change, since the number of nucleons (protons+neutrons) remains the same.
Learn more about radioactive decay:
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