10/25 notes

Question 1

what is VSEPR theory

Answer 1

electron pairs repel each other due to pauli exclusion principle (pauli repulsion)

Question 2

what can an electron cloud be

Answer 2

-lone pair
-bond pair (single bond)
-multiple bond pairs (counts as one cloud)
-single unpaired electron (radical)

Question 3

what is a radical

Answer 3

single unpaired electron

Question 4

what happens when electron clouds repel each other

Answer 4

they will arrange themselves as far apart as possible around an atom

Question 5

molecule shape and bond angle of 2 electron clouds

Answer 5

-linear
-180

Question 6

molecule shape and bond angle of 3 electron clouds

Answer 6

-trigonal planar
-120

Question 7

molecule shape and bond angle of 4 electron clouds

Answer 7

-tetrahedral
-109.5

Question 8

molecule shape and bond angle of 5 electron clouds

Answer 8

trigonal bypyramidal
-eq-eq 120
-eq-ax 90
-ax-ax 180

Question 9

what is eq

Answer 9

equilateral

Question 10

what is ax

Answer 10

axial

Question 11

molecule shape and bond angle of 6 electron clouds

Answer 11

octahedral
-90,180 (180 for atoms across from each other)

Question 12

principle 1 of molecular shape

Answer 12

lone pairs take up more space than bond pairs

Question 13

principle 2 of molecular shape

Answer 13

double bonds take up more space than single bonds

Question 14

what is distinguishing factor of seesaw molecular shape

Answer 14

lone pair in eq position (on side)
-5e- clouds
-<90 bond angle

Question 15

principle 3 of molecular shape

Answer 15

radical takes up less space than a pair

Question 16

square pyramid electron cloud and bond angle

Answer 16

6 electron clouds
-<90

Question 17

square planar molecular shape distinguishing factors

Answer 17

square planar
-6e- clouds
-180 degree bond angle

Question 18

what does it mean if a molecule has a net dipole

Answer 18

it is polar

Question 19

what prevents a lewis structure from having a net dipole

Answer 19

symmetry