Answer
See explanation below.
Work Step by Step
This answer can be found in the chapter 24 reading.
a. b2 decay of sodium-26
26 Na 11 --> 0 B-1 + 26 Mg 12
b. b2 decay of francium-223
223 Fr87 --> 0 B-1 + 223 Ra 88
c. Alpha decay of 212 Bi 83
212 Bi 83 --> 4 He 2 +208 Tl 81