20 terms

Lewis structures and Molecular geometry

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AX2
LINEAR 180
AX3
TRIGONAL PLANAR 120
AX4
TETRAHEDRON 109.5
AX5
TRIGONAL BYPYRAMIDAL 90 120 180
AX6
OCTAHEDRON 90 180
AX4E
SEE-SAW 90 120 180
AX3E2
t-SHAPED 90 180
AX2E3
LINEAR 180
AX5E
SQUARE PYRAMIDAL 90 180
AX4E2
SQUARE PLANAR 90 180
A
central atom
X
# of atoms attached to central atom
E
# of pairs of pairs of unshared electrons around A
hybrid orbitals
sp sp2 sp3 sp3d sp3d2
Pi and sigma
sigma comes before pi - - -
bond order
1O , , 1O 2O 2O 2(Pi)PY = 2(Pi)Z 2(pi)X 2(pi)PY 2(pi)PX
electronegativity
increases across period and decreases down a group
polar
uneven distribution
nonpolar
even distribution
AX2E2
BENT