Question

Select all that apply. The emission of a Beta particle has the effect of:

decreasing mass by one unit

increasing mass by one unit

no change in mass

adding a proton to the nucleus

Answer 1

Answer is: no change in mass and adding a proton to the nucleus .

Beta decay is radioactive decay in which a beta ray and a neutrino are emitted from an atomic nucleus.
There are two types of beta decay: beta minus and beta plus. 
In beta minus decay, neutron is converted to a proton and an electron and an electron antineutrino.
In beta plus decay, a proton is converted to a neutron and positron and an electron neutrino, so mass number does not change.

Answer 2

Answer:

No changes in mass and adding a proton of zero mass to nucleus

Explanation:

I just did the problem