carbon -12 and carbon -14 are
the exact same atom
isotopes of the same atom
completely different atoms
the same except that carbon -14 has 2 extra electrons
C12 and C14 are isotopes of each other.
Carbon-12 and carbon-14 are isotopes of the same atom, specifically carbon. Isotopes are atoms of the same element that have a different number of neutrons in their nucleus. In the case of carbon, the number of protons is always 6, but carbon-12 has 6 neutrons, while carbon-14 has 8 neutrons.
To determine if carbon-12 and carbon-14 are the same atom, we can compare their atomic numbers, which represent the number of protons in the nucleus. Since both isotopes have 6 protons, they are indeed the same element, carbon. However, their atomic masses are different due to the varying number of neutrons.
So, to answer your question, carbon-12 and carbon-14 are isotopes of the same atom, but with different masses. Therefore, they are not completely different atoms and carbon-14 does not have 2 extra electrons.