Which of the following are molecular solids and which are covalent solids? Se8, HBr, Si, CO2, C, P4O6, SiH4
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WEEK 7 NOTES Bond Polarity • Electrons are not always shared equally • Nonpolar o Electrons are shared evenly in a nonpolar bond • Polar o Electrons are shared unevenly in a nonpolar bond • Ionic o Electrons are exchanged between atoms, rather than shared Electronegativity • Tendency of atoms in compounds to pull electrons toward themselves • NOT THE SAME AS ELECTRON AFFINITY • Not directly measurable, but can be quantified • Nonmetals are more electronegative • Metals are less electronegative (especially active metals, the metals in groups I and II) • Generally, electronegativity decreases towards bottom left of the periodic table o Hydrogen does not follow this pattern •
Author: Raymond Chang; Kenneth Goldsby
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