UGA CHEM 2211 - Exam 1 Study Guide (13 pages)

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Exam 1 Study Guide



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Exam 1 Study Guide

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Pages:
13
Type:
Study Guide
School:
University of Georgia
Course:
Chem 2211 - Mod Organic Chem I
Edition:
1

Unformatted text preview:

CHEM 2211 1nd Edition Exam 1 Study Guide Lectures 1 8 Lecture 1 August 20th Remembering general chemistry Important questions 1 What are the main rules and principles a Are any of them related 2 What are the basic types of bonding 3 How are they different 4 What are the types of structures from this lecture 5 Show examples of each and how they are different 1 What are the main rules and principles There are 3 principles and 1 rule Quantum number principle Aafbau s principle Pauli principle Hunds rule 2 of the principles and hunds rule relate to electrons and how to assign them to atomic orbitals Aafbau s principle tells us the first step to assigning electrons to orbitals That an electron always goes into the lowest energy orbital available Note the closer the orbital to the nucleus the lower the energy o S P D F o Also 1S 2S 2P 3S 3P 3d etc Pauli exclusion principle gives us the second piece to placing electrons No more than two electrons can occupy each atomic orbital Also the electrons must have opposite spins Hunds rule last rule to assigning electrons to orbitals When there are two or more atomic orbitals with the same energy and electron will occupy an empty orbital before it will pair up with another electron This can all be represented by doing an electron configuration of an atom Sodium atomic number 11 Orbitals 1s 2s 2p 2p 2p 3s Hunds rule is representing the 2p part of this electron configuration First 1s 2s 2p 2p 2p the electrons occupy each 2p orbital in the same spin direction first Then 1s 2s 2p 2p 2p 3s What are the basic types of bonding polar results from a bond between two nonmetals of different electro negativities non polar results from a bond between two nonmetals but they are the same electro negativities ionic bond between a metal and nonmetal where one transfers an electron leaving a charge covalent bond that involves the sharing of electrons between atoms could be polar or nonpolar types of structures There are 3 from this lecture 1 lewis



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