How does a carbon -14 atom differ from a carbon -12 atom? A. Carbon -14 has fewer protons than carbon -12 B. Carbon -14 has more neutrons than carbon -12 C. Carbon-14 has more protons than carbon -12 D. Carbon -14 has fewer neutrons than carbon -12

The correct answer is B. Carbon-14 has more neutrons than carbon-12.<br /><br />Carbon-14 and carbon-12 are both isotopes of the element carbon. Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.<br /><br />Carbon-12 is the most common isotope of carbon, with 6 protons and 6 neutrons in its nucleus. Carbon-14, on the other hand, has 6 protons and 8 neutrons in its nucleus.<br /><br />Therefore, the key difference between carbon-14 and carbon-12 is that carbon-14 has more neutrons than carbon-12.