Ionic Covalent And Metallic Bonding / Lattices

Question 1

Define Metallic Bonding

Answer 1

The strong electrostatic attraction between the cations and the sea of delocalised electrons

Question 2

This Question is about Metals

What is there Melting and Boiling points

Answer 2

-Metals have giant metallic lattice structure with metallic bonding
-The strong metallic bonds need alot of energy to break

Question 3

This Question is about Metals

What is their Conductivity

Answer 3

-Metals have giant metallic lattice structure with metallic bonding
-There is a sea of delocalised electrons , that are mobile, and carry charge

Question 4

Sodium Vs Magnesium
Why does Mg have a higher melting point than Na

Answer 4

-Mg donates 2 electons to the sea , whereas Na donates
1 Electron
-Mg forms a 2+ Ion , Wheras Na forms a 1+ Ion
- There is a stronger attraction between the Mg2+ Ions and the delocalised electrons, Than the Na+ Ions and the delocalised electrons

Question 5

Name the Structure, Bonding, Shape and Bonding Angle of Diamond

Answer 5

Structure - Giant Covalent Lattice
Bonding- Covalent
Shape- Tetrahedral
Bonding Angles 109.5

Question 6

What is Diamonds, Conductivity ,MP and Bp, And Soft/Hardness

Answer 6

Poor Conductor - No sea of delocalised electrons
High MP and Bp- High amounts of energy required to break the strong covalent bonds
Hard- Tetrahedral shape allows external forces to be spread through the lattice

Question 7

Name the Structure, Bonding, Shape and Bonding Angle of Graphite (Graphene Too)

Answer 7

Structure - Giant Covalent Lattice
Bonding- Covalent
Shape- Hexagonal Layers (Triagonal Planar)
Bonding Angles 120

Question 8

What is Graphite + Graphene, Conductivity ,MP and Bp, And Soft/Hardness

Answer 8

Good Conductor - Has a ‘sea’ of delocalised electrons that are mobile and carry charge
High MP and Bp- High amounts of energy required to break the strong covalent bonds
Soft- The layers can slide due to only weak intermolecular forces

Question 9

What is the Melting Point , Electrical Conductivity, Solubilty
of Ionic Compounds

Answer 9

Electrical Conductivity
- As a solid there is poor electrical conductivity as the ions are held in a fixed position within a lattice, This means they are not mobile and not free to carry a charge
-When Molten there is high electrical conductivity as the ions are no longer held in a fixed postion with in a lattice and are mobile and are free to carry charge
Solubilty
-In the case of Nacl/ Polar Ionic Compounds
Water is polar and the ions interact with the water molecules
If not then it cant interact with the water molecules/
Melting Points
-High melting point as the ionic bonds are strong and require a large amount of energy to overcome

Question 10

Define Covalent Bonding

Answer 10

The strong electrostatic attraction between the nuclei of both atoms and the shared pair of electrons

Question 11

Define Dative Covalent Bonding

Answer 11

The strong electrostatic attraction between the nuclei of both atoms and the shared pair of electrons, with the bonded pair of electrons donated from the same atom

Question 12

Define Ionic bonding

Answer 12

The strong electrostatic attraction between the postive ions and negative ions (cations and anions)