Bonding Chemistry Higher

Metallic Bonding

A metallic bond is the attraction between positive cores (or ions) and delocalised (light attraction electrons which can move between cores) negative electrons.

The higher the boiling point, the stronger the metallic bond.

However, The boiling point decreases down group 1. This is because more outer shells of electrons are added, each having a less powerful force than the last.

For example, Lithium has a very high boiling point, whereas Caesium has a very low boiling point.

This weaker attraction means that the boiling point is lower.

The greater the number of delocalised electrons in a transition metal, the higher the boiling point. This is because the attraction between the nuclei and delocalised attraction is more powerful than between the electrons and the cores.

London Dispersion Forces:

Very Weak Attractions:

Normally, a noble gas such as neon is thought of as having atoms that do not bond to each other at all. This means the atoms fly about singly as a gas.

However, when we turn neon into a liquid then a solid, then we begin to see forces of attraction.

These weak attractions are…