Lecture 4 Notes - o Volume is 1-10 trillionth volume of...

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Lecture 4 Notes The elements o Elements with similar chemical and physical properties o Columns are groups o Rows are periods Metals o 75% of periodic table o Lusterous o Malleable, ductile o Conductor Nonmetals Metalloids Main group elements: groups 1,2, 13-18 Transition elements: groups 3-12, all metals Rare earth metals: lanthanides, actinides, all metals o Belong in periods 6 and 7 The modern atom o Nucleus—tiny dense center
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Unformatted text preview: o Volume is 1-10 trillionth volume of atom o Most of the entire mass of atom o Electrons occupy remaining volume o Protons give an atom its identiy; electrons give it its personality Structure of atom o Electron Charge = -1 Very low mass o Neutron No charge Mass slightly > proton o Proton Charge = +1 Mass is approximately that of hydrogen atom...
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Lecture 4 Notes - o Volume is 1-10 trillionth volume of...

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