Question

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

Answer 1

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