Radioactive dating game phet answers
So, for example, every carbon atom contains six protons and six electrons, but the number of neutrons in each nucleus can be six, seven, or even eight.Therefore, carbon has three isotopes, which are specified as carbon-12, carbon-13 and carbon-14 (figure 1). Comparison of stable and unstable atoms of the element carbon.
However, while the number of neutrons varies, every atom of any chemical element always has the same number of protons and electrons.
Geologists must first choose a suitable rock unit for dating.
They must find rocks that contain these parent radioisotopes, even if they are only present in minute amounts.
So, in general, few people quarrel with the resulting chemical analyses.
However, it is the interpretation of these chemical analyses of the parent and daughter isotopes that raises potential problems with these radioactive dating methods.