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The ratio used in carbon 14 dating is carbon 14carbon 12 carbon 13 the ratio in living organisms remains constant because organisms are constantly taking in carbon compounds that contain the same ratio of carbon14 to carbon 12 and carbon 13 that is found in the atmosphere.
Carbon is atomic number 6 so its atoms have 6 protons in their nuclei carbon14 atoms have 8 neutrons in addition to the 6 protons nitrogen is atomic number 7 so its atoms have 7 protons in their nuclei nitrogen14 atoms have 7 neutrons in addition to the 7 protons.
Carbon14 14 c or radiocarbon is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons its presence in organic materials is the basis of the radiocarbon dating method pioneered by willard libby and colleagues 1949 to date.
When the neutron collides a nitrogen14 seven protons seven neutrons atom turns into a carbon14 atom six protons eight neutrons and a hydrogen atom one proton zero neutrons carbon14 is radioactive with a halflife of about 5700 years.
By losing one neutron and gaining one proton 14 c is changed into nitrogen14 14 n 7 protons and 7 neutrons if 14 c is constantly decaying will the earth eventually run out of 14 c the answer is no carbon14 is constantly being added to the atmosphere.
Looking at the first isotope in the chart carbon 9 has 9 protons neutrons remember that the atomic number the bottom number indicates the number of protons so simple arithmetic should tell us the number of neutrons carbon 9 has 3 neutrons carbon 10 would have 4 neutrons and carbon 11 would have 5 neutrons and so on.
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