3 Bonding

Question 1

0 LP 2 BP

Answer 1

Linear 180

Question 2

0 LP 3 BP

Answer 2

Trigonal Planar 120

Question 3

1LP 2 BP

Answer 3

Bent less then 120

Question 4

0 LP 4 BP

Answer 4

Tetrahedral 109.5

Question 5

1 LP 3 BP

Answer 5

Trigonal Pyramidal less than 109 degrees

Question 6

2 LP 2 BP

Answer 6

Bent much less than 109

Question 7

0 LP 5 BP

Answer 7

Trigonal Bipyramidal 120 and 90

Question 8

1 LP 4 BP

Answer 8

Seesaw Less than 90 less than 120

Question 9

2 LP 3 BP

Answer 9

T-Shape 90

Question 10

3 LP 2 BP

Answer 10

Linear 180

Question 11

0 LP 6 BP

Answer 11

Octahedral 90

Question 12

1 LP 5BP

Answer 12

Square Pyramidal less than 90

Question 13

2 LP 4 BP

Answer 13

Square Planar 90

Question 14

3 LP 3 BP

Answer 14

T-shape Less than 90

Question 15

4 LP 2 BP

Answer 15

Linear 180

Question 16

State what is meant by electronegativity

Answer 16

the tendency of an atom in a covalent bond in a molecule to attract electrons

Question 17

Structure of NACL and how it is held together

Answer 17

Giant ionic (ionic lattice)

• Each sodium cation is surrounded by many chloride anions
• There is a strong electrostatic attraction between the positive Na⁺ ions and negative Cl⁻ ions
• This attraction holds the ions together in a lattice formation

Question 18

Structure of Mg and how it is held together.

Answer 18

Metallic
* The positive ions are surrounded by a sea of delocalised electrons
* Strong electrostatic forces between the ions and electrons hold the ions in a lattice

Question 19

Allotropes of carbon and structure type

Answer 19

Diamond, Graphite (graphene)

Macromolecular

Question 20

How is diamond held together?

Answer 20

• Every carbon atom is covalently bonded to four other carbon atoms
• This forms a giant regular structure
• The repulsion between the four covalent bonds forms a tetrahedral shape

Question 21

How is graphite held together?

Answer 21

• Each carbon atom is covalently bonded to three other carbon atoms in a 2D layer
• The layers are held together by van der Waals forces between the atoms in each layer
• Each atom provides a delocalised electron that moves in the gap between two layers

Question 22

What are examples of simple molecular structures?

Answer 22

Ice and iodine

Question 23

How is ice held together?

Answer 23

• The hydrogen atoms covalent bond to oxygen atom within each molecule.
• Hydrogen bonds act between the hydrogen and oxygen atoms in different molecules
• The hydrogen bonds hold the molecules in a hexagonal formation

Question 24

Whats a coordinate bond?

Answer 24

A covalent bonded formed when one atom donates both electrons.
Name atome.