Question 21 (1 point)
What is the mass number and charge of the positron that is emitted from the nucleus in beta-plus decay? (Hint, look at the nuclear decay symbol chart in the top right of the Gizmo.)
a
The mass of the positron is 2 and the charge is 4.
b
The mass of the positron is 1 and the charge is 0.
c
The mass of the positron is 0 and the charge is +1.
d
The mass of the positron is 4 and the charge is 2.