Shapes and symetry

For this course how would you determine if something is square planar or tetraheadral

if its d8 then its square planar

what are the two isomers of 3×1 3×2 complexes

fac and mer (face and meridian)

what is denticity

how many times the ligands binds

what are the two tyoes of 2 bidente cis

lambda (left going from frount to back) and delta

what is the trend of lone pair bond angles of XAX increasing sixe of A

X-A-X angle increases as size of central atom decreases as electrons in bond are closer

what about the in XAX as x changes in size

X-A-X angle increases as size of outer atoms increases Exception = Hydrogen (Hydrogen bonding effects

in trigonal bipyramidal why do the lone pairs fill the equatorial first

lone pairs repel more and therea less bonds with 90 deg angle

what happens on bond angle when theres a lone pair

this means the bond angles will be more as there are 4e- in this bond and so the electrons IN THE BONDS repel more

what happens for larger atoms in VSEPR on trigonal pyramidal structure

they go on the equatorial as they are more spacious

where can lewis structures be aplicable for

p block and hydrogen

how do you determine the central molecule in Lewis structure

least electronegative non hydrogen element

what would you do to determine lewis structure

add single bonds see if central one has less than 8 electrons if so make double bonds, is it positivly charged and not row 2 then try more bonds