Answer
$^{207}_{81}Tl → ^{207}_{82}Pb + ^{0}_{-1}e$
Work Step by Step
Tl-207 undergoes beta decay to form Pb-207
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.