Answer:
The nuclear equation you've provided seems to represent the radioactive decay of the isotope Strontium-90 (90Sr). In this process, Strontium-90 decays by emitting a beta particle (0-1e) and transforming into another element. The equation should be balanced, so it should look like this:
90Sr → 90Y + 0-1e + energy
Step-by-step explanation:
In this equation, Strontium-90 (90Sr) decays into Yttrium-90 (90Y) by emitting a beta particle (0-1e) and releasing energy in the process. This is a common type of radioactive decay known as beta decay.