Which of the following represents a pair of isotopes?

Question

Atomic Number Mass Number

a. I 7 16
II 8 16

b. I 17 34
II 18 36

c. I 17 35
II 17 37

d. I 7 14
II 8 16

e. I 17 37
II 18 37

Answer 1

Hint: The atomic numbers of both must be the same if they are isotopes of the same element.

Answer 2

yufyidyi

Answer 3

c