How does the nucleus change in beta-plus decay?(1 point) Responses The mass number decreases by one, and the atomic number remains the same. The mass number decreases by one, and the atomic number remains the same. The mass number remains the same, and the atomic number increases by one. The mass number remains the same, and the atomic number increases by one. The mass number increases by one, and the atomic number remains the same. The mass number increases by one, and the atomic number remains the same. The mass number remains the same, and the atomic number decreases by one.

Answer 1

In beta-plus decay (also known as positron emission), a proton in the nucleus is converted into a neutron, resulting in a decrease in the atomic number by one, while the mass number remains the same.

So, the correct response is: The mass number remains the same, and the atomic number decreases by one.