Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

Which pair represents isotopes of the same element?
Options
A ¹²C and ¹⁴N
B ¹²C and ²⁴Mg
C ¹²C and ¹³C
Correct Answer
D ¹H and ⁴He
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).

Question Info