The reaction which shows the beta particle being emitted is:
¹⁶⁸₆₈Er ⇒ ¹⁶⁸₆₇Ho + β⁰₋₁
This involves the emission of a beta particle as a result of the ratio of neutrons to protons in the nucleus being too high.
The element which is produced as a result of the beta particle emission is referred to as Holmium.
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