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Q: Why does the periodic table list mass numbers of stable isotopes instead of the average atomic mass?
A: The periodic table that comes with the atom building game is instructional in nature. Students are using this table to learn how atomic structure and the periodic table are related. This table is not used to perform stoichiometry calculations.
Q: This is the Bohr model of the atom, but I've always told my students that Bohr's model was wrong - the correct model is the wave model - what gives?
A: Try telling a chemist that Bohr's model is "wrong" and you will receive immediate opposition! The Bohr model is useful when learning how atomic structure is related to the periodic table, and is necessary when you are trying to predict how matter chemically reacts. The Wave Model is a more complete model, as it includes modern physics explanations for higher level atomic concepts. Learners cannot usually "bite off" an entire concept all at once. In the case of atomic theory, small bites are much more appropriate.
Q: What is the largest atom I can build with this atomic model?
A: You can build up to Xenon - 131.