VSEPR Shapes!!!!!

Question 1

what is E?

Answer 1

number of lone pairs (2 electrons = 1)

Question 2

what is X??

Answer 2

number of attached atoms directly bonded to central atom (not the same as number of bonds)

Question 3

E + X = 2

Answer 3

linear!!

Question 4

E + X = 3

Answer 4

trigonal planar

Question 5

E + X = 4

Answer 5

tetrahedral

Question 6

E + X = 5

Answer 6

trigonal bipyramidal

Question 7

E + X = 6

Answer 7

octahedral

Question 8

E + X = 7

Answer 8

pentagonal bypyramidal

Question 9

E = 0, X = 2

Answer 9

linear <3

Question 10

E = 0, X = 3

Answer 10

trigonal planar

Question 11

E = 1, X = 2

Answer 11

bent

Question 12

E = 0, X = 4

Answer 12

tetrahedral

Question 13

E = 1, X = 3

Answer 13

trigonal pyramidal

Question 14

E = 2, X = 2

Answer 14

bent

Question 15

E = 0, X = 5

Answer 15

trigonal bipyramidal

Question 16

E = 1, X = 4

Answer 16

seesaw!

Question 17

E = 2, X = 3

Answer 17

T-shaped

Question 18

E = 3, X = 2

Answer 18

linear

Question 19

E = 0, X = 6

Answer 19

octahedral

Question 20

E = 1, X = 5

Answer 20

square based pyramidal

Question 21

E = 2, X = 4

Answer 21

square planar

Question 22

E = 0, X = 7

Answer 22

pentagonal bipyramidal

Question 23

trends - bipyramidal

Answer 23

always have odd number of X, bonded atoms

exceptions; 3 bonds, 2 pairs = T-shaped
3 bonds, no lone pairs = trigonal planar

always odd number bonds on same page, equal number of bonds in and out of the page

Question 24

trends - linear vs bent

Answer 24

linear if 2 bonds, and either no lone pairs or if lone pairs between the bonds on either side

bend if 2 bonds and lone pairs between on only one side (1 or 2 lone pairs then bent)

Question 25

predicted bond angles linear

Answer 25

180 degrees

Question 26

predicted bond angles trigonal planar

Answer 26

120 degrees

Question 27

predicted bond angles tetrahedral

Answer 27

109.5 degrees

Question 28

axial

Answer 28

up and down

Question 29

equatorial

Answer 29

like cut in half from the side, equator like earth

Question 30

trigonal bipyramidal angles what other has these angles?

Answer 30

ax - equator, 90
axial axial, 180
equator equator 120

same as see saw

Question 31

t shaped angles

Answer 31

90 degrees ax eq

180 degrees ax ax

Question 32

do angles between lone pairs and bonds really count

Answer 32

noooo. except wierdly in square based pyramidal says 180 degrees, only 180 would be between axial bond and electrons

Question 33

is there a model for E = 3, X = 3?

Answer 33

nope idk why