CHEM1100 Lecture Notes - Lecture 2: Bohr Model, Transition Metal, Nonmetal
18 Nov 2017
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Chapter 4- atoms: atomic structure and theory: common atom size = 1 angstroms or 10-10 meters, atoms- the smallest unit of matter, can"t be split anymore, atom names(chemical symbols) Carbon, nitrogen, oxygen, c: need to know 36 symbols and names: (chart in notes, al aluminum, ar argon, as arsenic, ba barium, b boron, br. Bromine, cd cadmium, ca calcium, c carbon, cl chlorine, cr. Chromium, co cobalt, cu copper(cuprum), f fluorine, ga gallium, Au gold(aurum), he helium, h hydrogen, i iodine, fe. Iron(ferrum), pb lead(plumbum), li lithium, mg magnesium: periodic table. 1. 7 x 10-27: locations of the particles. Electrons: charge= protons - electrons, if an atom has a charge it is called an ion, positive ion is a cation, negative ion is an anion, example of atomic structure. Mnsymbolcharge 12c0: atomic symbol: c(carbon, mass number(mn): 12, charge: 0, atomic number(an): 6 (from periodic table, number of protons: 6, number of neutrons: 6, number of electrons: 6.
