Question

An isotope has an atomic number of 8 and an atomic mass number of 18. How many neutrons does it have?


26

18

8

10

Answer 1

The number of neutrons is calculated by subtracting the atomic number from the atomic mass number. In this case, 18 (atomic mass number) - 8 (atomic number) = 10 neutrons.

Therefore, the correct answer is 10 neutrons.