VSEPR + Electronegativity

Honors Chem

Nonpolar covalent

0.0-0.4, between nonmetals, electrons shared EQUALLY

polar covalent

0.5-1.7, between nonmetals, electrons shared UNEQUALLY- causes dipole!

Ionic

1.8+, metal and nonmetal, electrons TRANSFERRED

electron flow of dipole

arrow points towards more electronegative element

dipole charge

MORE e-neg element is partially NEGATIVE, LESS e-neg element is partially POSITIVE

degrees of linear angle

180

degrees of trigonal planar

120

degrees of bent

120

degrees of tetrahedral

109.5

degrees of trigonal pyramidal

109.5

What molecular geometry

linear

What molecular geometry

trigonal planar

What molecular geometry

bent

What molecular geometry

tetrahedral

What molecular geometry

trigonal pyramidal

molecular geometry vs. electron geometry

electron geometry: 3D arrangement of both bonding atoms AND lone pairs

molecular geometry: 3D arrangement of ONLY atoms- NO LONE PAIRS

for this test, we look at molecular geometry

LDS for H2

LDS for CO2

LDS for CH4

LDS for CCl4

LDS for H3CCOCH3

Show ions for NaCl

Na+Cl-

Show ions for HF

H+F-

Show ions for RbO

Rb+O-