Bonding In First 20 Elements

Question 1

Describe metallic bonding

Answer 1

High melting points
Strong metallic bonds (positive metal ions and negative electrons)
Conduct electricity (delocalised electrons)

Question 2

Describe Covalent molecular

Answer 2

Strong covalent bonds between atoms (infra)
Weak LDF between molecules
Sulfur (S8) phosphorus (p4) and fullerene C60 molecular solids due to heavier molecules and stronger LDF

Question 3

Describe Covalent Network

Answer 3

Strong covalent bonds between atoms, very high MP due to c bonds
Carbon (diamond and graphite) silicon and boron

Question 4

describe monatomic

Answer 4

Weak London dispersion forces between atoms MP increase as u move across period due to electrons increase

Question 5

Describe carbon diamond

Answer 5

Carbons Covalently bonded in tetrahedral form no free electrons mean no conduct

Question 6

Describe carbon graphite

Answer 6

Carbon forms 3 Covalent bonds 4th electron moves between hexagonal layers so there fore conducts