CHEM 1110 Lecture Notes - Lecture 13: Alkaline Earth Metal, Ionic Compound, Double Bond
24 Oct 2016
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Document Summary
Na is isoelectronic with ne when one electron is taken away: when alkali metals gain an electron they are stable like the noble gases. Ca is isoelectronic with ar when two electrons are taken away: when the alkaline earth metals gain two electrons they are stable like the noble gases. Cl is isoelectronic with ar when one electron is gained: when the halogens gain an electron they are stable like the noble gases. Noble gases: group 8a, stable and do not react. Hydrogen: can act like a metal and a non-metal. Metallic character: exhibition of physical and chemical properties of metals, metallic character increases from top right to bottom left. Metalloids have properties between those of metals and non-metals. Chemical bond: forces that hold atoms together to form molecules or polyatomic ions, that hold atoms together in metals, or that hold oppositely charged ions together to form ionic compounds, types of bonds.
