Question Detail
Question
Which pair represents isotopes of the same element?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Isotopes are atoms with the same number of protons (same element) but different numbers of neutrons. ¹²C and ¹³C both have 6 protons, so they are isotopes of carbon. The other pairs are different elements.
Hint
Look for two symbols with the same element letter (e.g., both 'C' for carbon).