Question

Carbon has two stable isotopes natural carbon has 98.9 % carbon 12 and 1.1 % carbon 13 calculate the average atomic weight of carbon

Answer 1

There are also carbon-13, with 6 protons and 7 neutrons, andcarbon-14, with 6 protons and 8 neutrons. Because these isotopes have more neutrons than carbon-12, they are heavier.