CHEM 312 Chapter 8: Readings - CH 8

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Out of the top 10 chemicals produced in the us, 8 of them are inorganic. 8. 1 general trends in the main group chemistry. Main group fills their s and p orbitals. The main group ranges from the most metallic to the most nonmetallic. On the far left, the alkali metals and the alkaline earth metals show metallic characteristics of luster, high ability to conduct heat and electricity, and malleability. The difference between metals and nonmetals is the difference in conductance. Elements along the diagonal from b to p are intermediate in behavior and are called metalloids or semimetals. F and the noble gases ne and he have high electronegativity. H is different than alkali metals in electronegativity and other chemical and physical properties. Noble gases have higher ionization energy than halogens. General increase in ionization energy occurs toward upper right. Alkali metals and the halogens have similar properties.