The most common isotope of carbon is
A) carbon-14
B) carbon-13
C) carbon-12
D) carbon-11

Question

Quizplus · Accepted Answer

Carbon-12 is the most common isotope of carbon, making up about 98.9% of all carbon on Earth. Carbon-13, with an extra neutron, makes up about 1% of carbon, while carbon-14, with two extra neutrons, is a much rarer isotope used for radiocarbon dating. Carbon-11, with one fewer neutron, is unstable and has a very short half-life, making it unsuitable for most applications.

The Most Common Isotope of Carbon Is