Answer to Question #92394 in Organic Chemistry for Tj

Question

Using VSEPR Theory, name and sketch the molecular shape of each of the molecules listed:
a) C2Br4(s)
b) HgCl2(s)
c) SnCl4(aq)

Answer 1

1) C2Br4

Valence electrons = 4*2+7*4 =36

Lewis dot structure

For each carbon atom:

bonding pairs =3

nonbonding pairs =0

general formula AB3

molecular geometry - trigonal planar

bond angle =120

2) HgCl2

Valence electrons 2+7*2 = 16

Lewis dot structure

bonding pairs = 2

nonbonding pairs = 0

general formula AB2

molecular geometry = linear

bond angle =180

3) SnCl4

Valence electrons = 4+7*4= 32

Lewis dot structure

bonding pairs = 4

nonbonding pairs =0

general formula = AB4

molecular geometry - tetrahedral

bond angle = 109.5