Imagine 3 red apples. They all look and taste the same and are the same size. But they may not be the same in the inside. If you cut open an apple you will see the seeds at the core. Isotopes are something like those 3 red apples. One has 6 seeds, the other has 7 seeds and the other has 8 seeds.
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If you can think of something better than this,
please add it to the database