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Chemistry unit 11

Ionic Bonding Chemical bonding that results from the electrical attraction between cations and anions
Covalent Bonding results from the sharing of electron pairs between two atoms
Electronegitivity nonpolar-covalent 0-0.3
Electronegitivity polar-covalent 0.4-1.7
Electronegitivity ionic >1.7
VSEPR theory predicts the shape of some molecules and assumes that pairs of valence electrons surrounding an atom repel each other
What atom goes in the middle in a 3 atom compound? Carbon or the least electronegitive atom
Hydrogen Bonding The intermolecular force in which a hydrogen atom that is bonded to a highly electronegative atom isattracted to an unshared pair of electrons of an electronegative atom in a nearby molecule
What does VSEPR stand for? valence-shell, electron-pairrepulsion
AX2 Linear && 180
AX3 Trigonal Planar && 120
AX4 Tetrahedral && 109.5
AX5 Trigonal Bipyramidal && 120/90
AX6 Octehedral && 90
AX2E Bent && 120
AX2E2 Bent && 109.5
AX3E Trigonal pyramidal && 109.5
AX4E Seesaw && 90/120
AX3E2 T-Shaped && 90/180
AX2E3 Linear && 180
AX5E Square Pyramidal && 90/180
AX4E2 Square Planar && 90/180
Boiling points for molecules Metallic>Ionic>Polar-Covalent>nonpolar-Covalent
dipole-dipoleforces The forces of attraction between polar molecules
London dispersion forces The intermolecular attractions resulting from the constant motion of electrons and the creation of instantaneous dipoles
Created by: ZENMASTER2001