Question: why are 12c6 and 14c6 isotopes of carbon?
Answer: Carbon-12 and carbon-14 are two isotopes of the element carbon. ... Atoms of carbon-12 have 6 neutrons, while atoms of carbon-14 contain 8 neutrons. A neutral atom would have the same number of protons and electrons, so a neutral atom of carbon-12 or carbon-14 would have 6 electrons.