Which is the more abundant isotope, Cl-35 or Cl-37?
A) The two isotopes are equal in abundance.
B) Cl-37
C) Cl-35
D) A third unstable isotope is more abundant.
E) Cl-17

Question

Quizplus · Accepted Answer

Chlorine has two stable isotopes, Cl-35 and Cl-37. Cl-35 is the more abundant isotope, with a natural abundance of approximately 75%. Cl-37, on the other hand, has a natural abundance of approximately 25%. Therefore, the correct answer is C) Cl-35. Option A) is incorrect because the isotopes are not equal in abundance. Option B) is incorrect because Cl-37 has a lower natural abundance. Option D) is incorrect because the question only refers to the two stable isotopes of chlorine, not a third unstable isotope. Option E) is incorrect because Cl-17 is not a known isotope of chlorine.

Which Is the More Abundant Isotope, Cl-35 or Cl-37