Final answer:
The hyphenated form of the isotope 29Al13 is Aluminum-29 or Al-29, where 'Al' is the chemical symbol for aluminum and '29' is the mass number.
Step-by-step explanation:
The isotope 29Al13 can be written in hyphenated form by first identifying the element's chemical symbol, which is 'Al' for aluminum, and then adding a hyphen followed by the mass number. The mass number is the sum of protons and neutrons in the nucleus. Since aluminum's atomic number is 13, which indicates it has 13 protons, and the isotope's mass number is given as 29, we use these two numbers to write the isotope in hyphenated form.
The hyphenated form of the isotope 29Al13 is therefore Aluminum-29 or Al-29.