Simulation: Go to https://phet.colorado.edu/en/simulation/isotopes-and-atomic-mass by clicking the link or the image below and complete the “Isotopes” simulation. Answer the following questions.
1. Is Beryllium-12 stable or unstable?
2. What is the natural abundance of Lithium-6?
3. How many of the elements in the simulation have more than one naturally-occurring isotope?
4. How many stable isotopes of neon are there?
5. Create your own isotope. List its features.