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Shapes
Electron pairs repel each other
Lone pair-lone pair repel the most
Lone pair- bonding pairs middle
Bonding- bonding least…read more

Slide 3

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Shapes and angles
o=c=o linear 180*
· BCl3 triangonal
planar 120*
· SO2 Bent 120*
· Double bond cancels the lone
pair…read more

Slide 4

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Shapes and Sizes
· NH4 tetrahedral 109.5*
· NH3 triangonal pyramidal 107*
· H2O Bent 104.5*
If lone pair minus 2.5*…read more

Slide 5

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Shape and Size
· PCl5 trigonal pyramidal 120* and
90*
· SF6 octahedral 90*…read more

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Carbon Structure - Diamond
High melting point
Very hard
Good thermal conductor ­ vibrations travel
through lattice easily
CANT conduct electricity ­ outer e- held firm
Wont dissolve in any solvent
Very strong covalent bonds…read more

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