Chapter 2 Atomic Structure and Interatomic Bonding

Question 1

What are the primary bondings?

Answer 1

Primary bondings = chemical bonding

1. Ionic (metal + nonmetal, donate and accept e-)
2. Metallic (metal + metal, delocalized e-cloud)
3. Covalent (nonmetals or e- sharing)

Question 2

What are the secondary bondings?

Answer 2

Secondary bondings = “Intermolecular force”
• induced by dipole moment
• Van der Waals Force
• with dispersion forces such as Debye, London, Keamson and Pauli.

Question 3

Valence Electrons affect properties such as….

Answer 3

Chemical
Electrical
Physical
Optical

Question 4

Why are metals ductile and ceramics brittle? Explain in terms of bonding.

Answer 4

Metals are ductile due to the non-directional bonding of metallic bonds. It allows “slip” in the structure
Ceramics have ionic bond which are directional due to the influence of the charges.