A tin atom has an atomic number of 50 and a mass number of 118. How many neutrons are present in this atom?

Question

asked Jan 9, 2021 16.4k views

1 Answer

Thomas Pornin · Answer 1 · 2021-01-14T16:46:21+0000

Answer:

68 neutrons

Tin-118 has 68 neutrons and 50 protons, for a neutron-to-proton ratio of 1.36. As in part b, this value and the atomic number both suggest stability.