Use the equation to answer the prompt.

10 6C→10 5B+ 0+1e

A student claims that the equation models beta-minus decay because the atomic number of the nucleus decreases by one. In one or two sentences, explain the error in the student’s reasoning.

The error in the student's reasoning is that the atomic number of the nucleus does not always decrease by one in beta-minus decay. While the equation does show a decrease by one in the atomic number of B, it does not account for any changes in the atomic number of nucleus C or the e- being emitted.