Question Detail

PHY 104 Atomic Structures Objective Question

Question

What happens to a neutron in beta-minus (β-) decay?
Options
A It is converted into a proton, emitting a positron.
B It is converted into a proton, emitting an electron.
Correct Answer
C It is converted into an electron, emitting a proton.
D It remains unchanged, emitting a gamma ray.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The section 'Beta minus Decay' states: 'Light nuclei with excess neutron convert the excess neutron into proton emitting a beta β– particle.' The equation also shows a neutron (¹n₀) converting to a proton (¹P₁) and an electron (⁰e⁻₁).

Hint

Beta-minus decay involves the emission of an electron.

Question Info