An atom of the isotope sulfur-31 consists of how many protons, neutrons, and electrons?
(p = proton, n = neutron, e = electron)
a) 15 p, 16 n, 15 e
b) 32 p, 31 n, 32 e
c) 16 p, 15 n, 16 e
d) 16 p, 16 n, 15 e
e) 16 p, 31 n, 16 e
Answer: c) 16 p, 15 n, 16 e