Aluminum , atomic number 13.
Work Step by Step
Carbon has atomic number 6. If two C atoms were to fuse, 6 + 6 = 12, forming magnesium, atomic number 12. A beta emission raises its atomic number by 1, to 13.
You can help us out by revising, improving and updating this answer.Update this answer
After 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.