Page 147 - Science Course 2 (Book 1)

Mo.5-L3b: What is Metallic Bonding?

Mo5-L3b What is Metallic Bonding? O

KEY CONCEPTS: H H
1. How do metallic bonds differ from covalent and
ionic bonds? Water
H H

Vocabulary A-Z C O

Let us learn some vocabulary
Methanol H

Metallic bond
is a bond formed when many metal atoms share Metallic Bonds—Electron Pooling
their pooled valence electrons.
A metallic bond is a bond formed when many metal
atoms share their pooled valence electrons.

Valence electrons in metals are not bonded to one
atom.

Instead, a “sea of electrons” surrounds the positive
ions.

+ + + +

electrons - - - Metal Atoms
+ + + - + + + +

+ + + +
Let’s Begin

+ + + +
Ionic Compounds

Individual ions in an ionic compound are strongly Sea of delocalised electrons
attracted to each other.

Covalent compounds are made up of many Valence electrons are free to move among all the
molecules. aluminum (Al) ions.

C O C + +
Al Al
Carbon dioxide Al + Al +
Al +
O C +
Al + Al Al + Al +
Carbon monoxide

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