Nitrogen-12 decays through positron emission into this element:N-13 b.C-12 c.C-13 d.N-12 2. Gamma decay always involves the emission of this...

1.

Nitrogen-12 decays through positron emission into this element: 

a. N-13 

b. C-12 

c. C-13 

d. N-12

2.

Gamma decay always involves the emission of this particle. 

a. A photon 

b. An electron 

c. A neutron 

d. A proton

3.

A nucleus with 64 nucleons (33 of which are neutrons), undergoes beta-negative decay. The products include one of the following. 

a. A nucleus with 30 protons 

b. A nucleus with 32 neutrons 

c. A nucleus with 62 nucleons 

d. A nucleus with 63 nucleons