Properties of elements

Families of elements

Electronic structure

Chemical properties

Nobel gases

Closed shells

Inert, passive.

Alkali metals

A single s electron in the outer shell.

React violently with water.

Alkaline earth metals

Two s electrons in the outer shell.

React with water, but not violently.

Transition elements –metals

The outer shell is not empty or complete

Not very reactive.

Halogens

One electron is missing from completing a shell

Very reactive nonmetals