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# Download The Shroedinger/Modern Model of the Atom

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Transcript

Schrödinger's/ Modern model of the atom Particle-Wave Nature of Matter Light has a particle nature (Einstein): • photon – quantum of energy that behaves in some ways like a particle Matter has a wave nature (De Broglie): • • Electrons scatter like X-rays Electron microscopes use this property to see very small things. Heisenberg’s Uncertainty Principle The position and speed of a moving object cannot BOTH be known exactly at the same time. Heisenberg, Cont. Why? • The act of observing changes an object. • To see things, we must bounce light off of them. • To observe an electron, we have to bounce light off of it. • The light would move the electron so much that we would not be able to tell where it was, or how fast it was going. • Think of hot tea and a cold thermometer. A new idea! Orbitals: • A region around the nucleus of the atom where an electron of a given energy is likely to be found. • We don’t know exactly where electrons really are, just where they are likely to be. • Also called an electron cloud or probability region. So, what’s an orbital?? Orbit Orbital ex. Electron is like a bee around a beehive.