Q. The isotopes of chlorine with mass number 35 and 37 exist in the ratio of
A) 2:3
B) 1:2
C) 3:4
D) 3:1
✔ Correct Answer: 3:1
Exam Insight
The natural isotopic ratio of chlorine-35 to chlorine-37 is approximately 3:1, with chlorine-35 being the most abundant.