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ORGANIC CHEMISTRY LANEY COLLEGE CHEM 12A Version 4.0, 8/21/07 Chapter 1, Learning Objectives and Terminology Clearly know the difference between the two types of bonds in chemical compounds: ionic and covalent . Ionic bonds are electrostatic in nature covalent bonds are due to sharing of electrons. Distinguish elements by the number of protons ( atomic number , Z) in the nucleus. The number of protons plus the number of neutrons in the nucleus is the mass number (A), thus the number of neutrons of any given isotope of an element is A minus Z. Isotopes are atoms of the same element (same Z value) that have different mass values (different A values) and thus differ only in the number neutrons. The number of electrons ( e - ) in a neutral atom exactly balances the number of protons in the nucleus. Charged atoms are called ions . Clearly show the ground-state electronic configuration, using appropriate acceptable notation, for all elements up to at least the 3 rd row elements (to argon) by applying the
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This note was uploaded on 01/23/2010 for the course CHEM 12A taught by Professor Corlett during the Spring '07 term at Laney College.

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