Polarity Flashcards
how does electronegativity influence polarity
atoms of different elements are more/less electronegative, resulting in an uneven distribution of charge known as polarity, more electronegative atoms mean the shared electrons are mostly around that atom
how is partial negative charge represented
with the greek letter delta δ-
how is partial positive charge represented
with the greek letter delta δ+
electric dipole
the difference in the positive and negative charges in a polar molecule, which also have a permenant dipole
how do you dtermine the polarity of a polyatomic molecule
the polarity of the covalent bonds and the shape
what are the rules of polarity
symmetrical molecules are nonpolar, asymmetrical molecules are polar, nonpolar solutes dissolve nonpolar substance, polar solutess dissolve polar substances
electron density
the measure of the probability of an electron being present within a particular location of an atom
how to calculate polarity between different molecules
greater difference in electronegativity, greater polarity
if there is a 0 electrongativity difference…
electrons are shared equally, nonpolar covalent bond
if there is less than 1.7 difference in electrongativity difference…
electrons are attracted to more electronegative atom, polar covalent bond
if there is more than 1.7 difference in electrongativity difference…
electrons are transfered to more electrongeative atom, ionic bond