CHEM 110 Lecture Notes - Lecture 5: Atomic Mass (Band), Ductility, Valence Electron
3 Feb 2017
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Document Summary
Amount of energy absorbed in a jumping from one energy level to a higher energy level is a precise quantity. Energy of that jump is the energy difference between the orbits involved. Orbit: what bohr called the fixed energy levels. Ground state: the lowest possible energy state. Electronics are found only in these energy levels (orbits / orbitals) Highest-energy orbits are farthest from the nucleus. Absorb energy by excitation of electrons to higher energy levels. Release energy by relaxation of electrons to lower energy levels. One major change from bohr"s model is that electrons do not move in orbits. Regions in space with a high probability of finding an electron. Electrons move rapidly within the orbital giving a high electron density. The periodic law and the periodic table. Dmitri mendeleev and lothar meyer - two scientists working independently developed the precursor to the modern periodic table.
