The nucleus of iodine-131 (I-131) undergoes beta-minus decay, which means a neutron in the nucleus is converted into a proton. This results in the atomic number (number of protons) increasing by one.
Therefore, after beta-minus decay, the nucleus will have 54 protons.
So the correct answer is:
54
The nucleus shown undergoes beta-minus decay.
131 53I
How many protons will the nucleus have after it decays?
(1 point)
Responses
54
54
130
130
132
132
52
1 answer
26 answers