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Across 1. another name for an orbital 3. this physicist developed the uncertainty principle 4. this model describes atoms as having certain allowed quantites of energy 7. the most stable energy state 9. also called wave functions, they give information about an electron's energy and location within an atom 10. this scientist started the study of quantum mechanics 11. scientists hypothesized that there are many of these within each energy level 12. the total number of orbitals when n = 3

Down 2. denotated as (l); this quantum number refers to the energy sublevels within each principle energy level 5. denotated as (m ); this quantum number indicates the orientation of the orbital in the space around the nucleus 6. this scientist develped the concept of matter waves 8. denotated as (n); this quantum number specifies energy level of an atomic orbital and its relative size