What is the mass number of the particle emitted from the nucleus during beta minus (β–) decay?

The mass number of the beta particle is 0.

Explanation: There are three types of radioactive decays. One of which is beta minus decay.

In beta minus decay, a neutron gets converted to a proton and electron. The electron released is the beta particle which does not carry any mass.

General reaction for beta- minus decay is given by:

Where A represents the mass number

Z represents the atomic number

i think it is true since you can test the answer and can use observations to complete it.

sorry i was late, but i don't know what assignment your talking about, i'm in flvs as well, im in earth space science. but u are behind pace bc every class should be in the 3's or 4'