Shapes of Molecules

Question 1

Describe charge clouds

Answer 1

Bonding pairs and electrons exist as charge clouds.

A charge cloud is an area where you have a really big chance of finding an electron pair.

The electrons don’t stay still- they whizz around inside the charge cloud

Question 2

Describe the order of strength of electron charge clouds in different bonding pairs (biggest to smallest)

Answer 2

Lone pair/lone pair angles are the biggest

Lone pair/bonding pair angles are the second biggest

Bonding pair/bonding pair angles are the smallest

Question 3

Shape and bond angle of molecules with two electron pairs and no lone pairs

Answer 3

Linear shape

180 degree angles

Question 4

Shape and bond angle of molecules with three electron pairs and no lone pairs

Answer 4

Trigonal Planar

120 degree angles

Question 5

Shape and bond angle of molecules with four electron pairs and no lone pairs

Answer 5

Tetrahedral

109.5 degree angles

Question 6

Shape and bond angle of molecules with four electron pairs and one lone pair

Answer 6

Trigonal Pyramidal

107 degree angles

Question 7

Shape and bond angle of molecules with four electron pairs and two lone pairs

Answer 7

Bent

104.5 degree angles

Question 8

Shape and bond angle of molecules with five electron pairs and no lone pairs

Answer 8

Trigonal bipyramidal

120 and 90 degree angles

Question 9

Shape and bond angle of molecules with five electron pairs and one lone pair

Answer 9

Seesaw

102 and 87 degree angles

Question 10

Shape and bond angle of molecules with five electron pairs and two lone pairs

Answer 10

T-shaped

88 degree angles

Question 11

Shape and bond angle of molecules with six electron pairs and no lone pairs

Answer 11

Octahedral

90 degree bond angles

Question 12

Shape and bond angle of molecules with six electron pairs and two lone pairs

Answer 12

Square planar

90 degree bond angles