Lewis structures and Molecular geometry

20 terms by taquilino 

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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

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