Question

question 5 (1 point)
when a $\beta+$ particle is emitted from an unstable nucleus, the atomic number of the nucleus
increases by 1.
decreases by 1.
does not change.
none of the given answers

Explanation:

In beta - plus ($\beta^+$) decay, a proton in the nucleus is converted into a neutron, a positron ($\beta^+$ particle) and a neutrino. The atomic number (which is equal to the number of protons in the nucleus) decreases by 1 because a proton is converted into a neutron.

Answer:

B. decreases by 1.