Division as equal groupings

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=74L0ZOp4fW8

To tell if LiI (Lithium iodide) is ionic or covalent (also called molecular) we look at the Periodic Table that and see that Li is a non-metal and I is a non-metal. When we have a metal and a non-metal the compound is USUALLY considered ionic. • We can also look at the difference in electronegatively for LiI. This difference in electronegativity tells us hoe the electron(s) will be shared between the metal and non-metal. In this case the difference 1.68 . Therefore we would expect LiI to be a covalent compound. Fajan's Rules (https://en.wikipedia.org/wiki/Fajans%...) also support this idea-. • --- • Helpful Resources • Metals, Non-Metals on the P- Table: • Metals, Nonmetals, and Metalloids on ... • Ionic, Covalent, Polar Covalent: • Polar, Non-Polar, and Ionic Compounds... • Electronegativity for each element: https://en.wikipedia.org/wiki/Electro... • --- • Because we have a combination of a non-metal and non-metal LiI (Lithium iodide) is considered an covalent/molecular compound. • In general, covalent compounds compounds: • have low melting points and boiling points. • have low enthalpies of fusion and vaporization. • do not conduct electricity when dissolved in water. • For more chemistry help, see http://www.Breslyn.org.

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