Bonding and structure; shapes of molecules

Question 1

what does molecules shapes depend on?

Answer 1

the number and type of electron pairs around the central atom

Question 2

why do molecules have specific shapes with specific angles?

Answer 2

bonds will TRY repel each other equally–> bonds contain electrons–> elecctrons want to repel each other as much as possible

Question 3

what does it mean if there is an increase in number of lone pairs?

Answer 3

there will be a smaller angle between the bonding pairs

Question 4

what is the cause of a smaller bond angle?

Answer 4

the lone pairs–>repel as much as possible–>push bond pairs closer together

Question 5

what are the biggest angles between?

Answer 5

lone pair and lone pair

Question 6

what is the second biggest angle between?

Answer 6

lone pair and bonding pair

Question 7

what is the smallest angle between?

Answer 7

bond pair and bond pair

Question 8

how many shapes of molecules are there?

Answer 8

10

Question 9

state the bp/lp + angle of linear molecules

Answer 9

bonding pair=2
lone-0
angle=180 degrees

Question 10

state the bp/lp + angle of the first trignol planar?

Answer 10

bp=3
lone=0
angle=120 degrees

Question 11

state the bp/lp + angle of tetrahedral

Answer 11

bp=4
lp=0
angle=109.5 degrees

Question 12

state the bp/lp + angle of trignol bypramidal

Answer 12

bp; 5
lp=0
120 degrees and 90 degrees

Question 13

state the bp/lp + angle of octrohedral

Answer 13

bp=6
lp=0
angle=90

Question 14

state the bp/lp + angle of the first bent

Answer 14

bp=2
lp=1
angle=120 degrees

Question 15

state the bp/lp + angle of pyramidal

Answer 15

bp=3
lp=1
angle=107.5

Question 16

state the bp/lp + angle of second bent

Answer 16

bp=2
lp=2
angle=104.5

Question 17

state the bp/lp + angle of 2nd trignol planar

Answer 17

3 bonding + 2 lone–> 120 degrees

Question 18

state the bp/lp of square planar?

Answer 18

4 bonding + 2 lone pair –90 degrees