Question

Carbon-13 is an isotope of carbon with a mass number of 13. How many neutrons are in a carbon-13 ?

Answer 1

7

Step-by-step explanation:

The 13 in C-13 shows the relative atomic mass of the isotope. the number of protons in carbon stay the same, while the number of neutrons changes. To find the number of neutrons in an atom, you must subtract the Atomic Mass Number with the Atomic Number. 13-6 = 7