Question

Which of the following statements is true about isotopes?

a. the number of protons always equals the number of neutrons in all isotopes
b. the number of protons never equals the number of electrons in an isotope
c. different isotopes for the same element always have the same number of protons
d. different isotopes for the same element will always have the same numbers of neutrons

Answer 1

i believe the answer is "Different isotopes for the same element always have the same number of protons". just took the test

Answer 2

c) Isotopes always have the same number of protons