CHEM 1A Chapter Notes - Chapter 9.6: Shap, Linus Pauling, Chemical Polarity
Document Summary
Linus pauling increases across a period in the periodic table decreases down a column in the periodic table electronegativity inversely related to atomic size larger atom, attracts electrons less greater electronegativity difference = more polar bond nonpolar elements with identical electronegativity share atoms equally(0 0. 4 en) ionic metal and nonmetal large electronegativity difference (2. 0+ en) polar covalent intermediate electronegativity difference (0. 4 2. 0 en) dipole moment ( ) anytime there is a separation of positive and negative charge. 10. 3 vsepr theory: the effect of lone pairs electron geometry geometrical arrangement of the electorn groups molecular geometry geometrical arrangement of the atoms trigonal pyramidal 4 electron groups, 1 lone pair lone pair > bonding electrons bent 4 electron groups, 2 lone pairs seesaw 5 electron groups, 1 lone pair (occupies equatorial position) t shaped 5 electron groups, 1 lone pair (occupies equatorial position) square pyramidal 6 electron groups, 1 lone pair square planar 6 electron groups, 2 lone pairs.
