Compare the structure and numbers of subatomic particles in an electrically neutral atom of carbon and an isotope of carbon. (at least two sentences?)
Whoever is asking this is a fool, because there's no difference between electrically neutral atoms and their isotopes. Any isotope can have the same electric charge as any other isotope because the difference in isotopes is just the number of neutrons it contains, which is as the name suggest, a neutral particle without charge. Carbon is defined as having 6 protons, and if it has 6 electrons then it's neutral. If it has more or less, then it has a positive or negative charge depending on what there are more of. When you look at the periodic table there is another number that looks like 12.01. This means that there are usually 6 protons and 6 neutrons in the atom, but sometimes there are 6 protons and 7 neutrons, but very rarely. This is the atomic weight and it's based on the average weight.
Ugh, second time so one has said that the question makes no sense! This teacher... haha thanks!
someone*
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