What happens in the process of beta decay? a. a neutron transforms into a proton and an electron. b. a proton transforms into a neutron and an electron. c. a neutron and an electron combine to make a proton. d. a proton and an electron combine to make a neutron.

A. A neutron transforms into a proton and an electron.

Explanation:

Yes, this is what happens in β decay.

The proton stays in the nucleus and increases the atomic number by one, and the electron is ejected from the nucleus.

B is wrong. This is impossible because charge is not conserved. You can’t convert a positive particle into a negative particle.

C is wrong. Again, this is impossible because charge is not conserved.

D is wrong. Charge is conserved, but this is the process of electron capture.

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