Chapter 1 Outline - Organic Chem Chapter 1 Outline Structure of the Atom Protons Positively charged found inside the nucleus Neutrons Neutral

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Organic Chem Chapter 1 Outline Structure of the Atom Protons: Positively charged; found inside the nucleus. Neutrons: Neutral Charge; Found inside the nucleus. Electron: Negative Charge; outside the nucleus. Isotope: Atoms with the same number of protons but different number of neutrons. (Ex. 14 C) Electronic Structure of the Atom Electrons bound to nuclei are found in orbital’s. It is impossible to determine the exact location of an electron, however we can determine electron density. Electron Density: The probability of finding an electron in a particular orbital Electron Orbitals Orbitals are grouped into shells Each shell is identified by a principal quantum number n = 1 is the lowest As n increases -> shells are farther from the nucleus, energy increases and it can hold more electrons Second electron shell consist of 2 orbital’s [2s and 2p] Node: Beyond the region of zero electron density p Orbitals: Slightly higher in energy than 1s orbital’s Each p orbital consists of 2 lobes on either side of the nucleus. The nodal plane is at the nucleus
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Nodal Plane: A flat region of space with zero electron density
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This note was uploaded on 04/01/2011 for the course CHEMISTRY 202 taught by Professor Dr.hangour during the Spring '11 term at SUNY Buffalo.

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Chapter 1 Outline - Organic Chem Chapter 1 Outline Structure of the Atom Protons Positively charged found inside the nucleus Neutrons Neutral

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