physical sciences
posted by lalt .
How many neutrons are in an atom of carbon with a mass number of 14?
help please...

Carbon has an atomic number of 6, which means it contains 6 electrons. To find the number of neutrons, just subtract the atomic number from the mass number. So 146 = 8.
There are 8 neutrons in an atom of carbon with a mass number of 14. 
Eight is correct for the number of neutrons. Carbon14 is an important isotope used for radioactive dating of carboncontaining organic matter. Its half life is 5568 years.