What are aspects of quantum mechanics that distinguish it from classical mechanics? (Select all that apply) a) Particles and waves b) Particle-wave duality c) Discrete energy levels at the atomic scale d) Experimental uncertainty e) Observational uncertainty What was the primary innovation of the Bohr atomic model? a) Atomic composition was composed of positively and negatively charged particles b) Atomic structure invoked a small, central nucleus and diffuse, floating electrons c) Electron orbits occurred at fixed radii corresponding to quantized angular momentum d) Electron orbits had different shapes based on quantum numbering e) Electrons could share quantum numbers

What are aspects of quantum mechanics that distinguish it from classical mechanics? (Select all that apply) a) Particles and waves b) Particle-wave duality c) Discrete energy levels at the atomic scale d) Experimental uncertainty e) Observational uncertainty What was the primary innovation of the Bohr atomic model? a) Atomic composition was composed of positively and negatively charged particles b) Atomic structure invoked a small, central nucleus and diffuse, floating electrons c) Electron orbits occurred at fixed radii corresponding to quantized angular momentum d) Electron orbits had different shapes based on quantum numbering e) Electrons could share quantum numbers