Shapes of covalent compounds and bond length and strength

Question 1

what is VSEPR and what does it mean

Answer 1

valence shell electron pair repulsion theory

predicts the shape and bond angles of compounds

Question 2

repulsion forces

Answer 2

cause by bonded pairs of eklectrons as they have a negative charge and repel other electrons to minimise repulsion

Question 3

is repulsion treated the same between single and double bonds

Answer 3

yes

Question 4

what repels more lone pairs or bonded pairs and why

Answer 4

lone pairs - more concentrated electron charge cloud than bonding pairs of electrons

cloud charges are closer to central atoms nucleus as the cloud is wider

Question 5

2 total pairs of electrons shape and bond angle

Answer 5

linear 180

Question 6

3 total pairs of electrons shape and bond angle

Answer 6

trigonal planar 120

Question 7

3 total pairs of electrons shape and bond angle but 1 lone pair

Answer 7

v shaped
117.5 ( 2.5 less than 120)

Question 8

4 total pairs of electrons shape and bond angle

Answer 8

tetrahedral 109.5

Question 9

4 total pairs of electrons shape and bond angle but 1 lone pair

Answer 9

trigonal pyramidal
107

Question 10

4 total pairs of electrons shape and bond angle but 2 l;one pairs

Answer 10

V shaped 104.5

Question 11

5 total pairs of electrons shape and bond angle

Answer 11

trigonal bipyramidal
90 x 2 and 120

Question 12

5 total pairs of electrons shape and bond angle but one lone pair

Answer 12

see saw
120 between bottom two legs of see saw

90 at rest

Question 13

5 total pairs of electrons shape and bond angle but two lone pairs

Answer 13

trigonal planar
120

Question 14

6 total pairs of electrons shape and bond angle

Answer 14

octohedral
90

Question 15

6 total pairs of electrons shape and bond angle one lone pair

Answer 15

square pyramidal
90

Question 16

6 total pairs of electrons shape and bond angle two lone pair

Answer 16

square planar
90